a hydraulic lift is being used to elevate a car. the right side of the lift has a larger area than the left. when the two pistons are at the same vertical height, which side of the lift has higher pressure?

Answers

Answer 1

A hydraulic lift is being used to elevate a car. The left side of the lift has higher pressure.

We know that, Pressure = Force/ Area

Pressure and area are inversely proportional to each other.

We need to find out the relation between pressures and areas of the two pistons.

So, P₁ A₁ = P₂ A₂

Let the right side of the lift that has larger area is A₂.

Hence, A₂ > A₁

As pressure and area are inversely proportional to each other, to balance the equation, P₂ should have lesser pressure as A₁ is less than A₂.

Thus, P₁ is greater than P₂ and the left side of the lift has greater pressure.

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Related Questions

Tsunamis begin when some kind of trigger, such as an earthquake, landslide, or volcano, causes a large part of the surface of the water to rise or fall. True or false: after this sudden displacement of water, gravity acts to balance the water levels back, resulting in a tsunami.

Answers

It is true that a huge portion of the water's surface rises or falls when a trigger, such as an earthquake, landslide, or volcano, causes a tsunami to occur.

An approaching tide may initially resemble a tsunami more than a breaking wave. As a result, it is frequently referred to as a tidal wave, even though the scientific community opposes this terminology because it may give the incorrect idea that tides and tsunamis are directly associated.

Tsunamis frequently consist of a series of waves that travel together in a "wave train" and last anywhere from a few minutes to several hours. Large events could result in waves that are tens of meters high.                                                                                             Although tsunamis only have an influence on coastal areas, they can have a tremendous impact on the entire planet due to their powerful destructive energy.

This proves that the statement that tsunamis start when some sort of trigger, such as an earthquake, landslide, or volcano, causes a significant portion of the water's surface to rise or fall is true.

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If the forces acting on an object are balanced, what must be true about the motion of this object?.

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If the forces acting on an object are balanced, so it doesn't cause a change in motion.

The effect of force on the motion of objects

1. Force on a stationary object

This force occurs when there is an impulse that is done in the opposite direction with the same force. Then each object emits a force. But because the directions of the forces are opposite to each other, the total force becomes smaller or cancels each other out.

2. Force on moving objects

In this style, when two people push an object together, the position of the object can shift. That's when there is motion caused by more than one force. The forces on objects become mutually reinforcing, so the resulting force becomes greater. Forces that are in the same direction will increase the total force.

3. Force on an object that causes a change in the direction of motion

When someone rides a bicycle then turns the direction of movement. It happens that there is a tensile force and muscle force that deflects the bicycle handlebar. When playing the ball can change the direction of the ball caused by kicks, throws, or punches from players. Then the player exerts a force on the ball that causes the ball to change direction. So here the force plays a role in changing the direction of a moving object.

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How does sleep heal the body?

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Sleep is very crucial in healing our body. Proper sleep helps person in proper healing from any type of injuries.

The foundational resistant capability is harmed by sleep limitation. A clinical report by Smith et. al showed that sleep limitation deferred skin obstruction recuperation, and sustenance supplementation constricted decrements in nearby safe reactions delivered by rest limitation.

Proper sleep helps in proper flow of blood in all over of our body, due to which any type of injuries which is present in our body gets eliminated in few days.

As Dr. Walker examines in "Why We Rest"; in spite of the fact that competitors know the significance of pre-game rest, they are regularly amazed by the equivalent or expanded significance for rest in the days post-game. He distinguished that post-execution rest speeds up actual recuperation from aggravation, invigorates muscle fix, and restocks cell energy. This shows the really beneficial impacts of sufficient rest on insusceptible capability, actual recuperation, and mending.

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Scientists on earth are able to communicate with rovers on mars through their receivers, which can receive and process signals. Which of these best describes the signals sent and received by rovers?.

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The best describes the signals sent and received by rovers are electromagnetic waves.

Depending on the planet's position, it generally takes about 5 to 20 minutes for a radio signal to travel the distance between Mars and Earth. Using an orbiter to relay messages is beneficial because it is much closer to perseverance than a deep space network (DSN) antenna on Earth.

It takes 5 to 20 minutes for communication to reach Mars from Earth and vice versa. Rovers and landers on the surface of Mars emit radio signals to spacecraft orbiting Mars, which relay radio waves to Earth. This is where the signal is received by a global system of radio antennas called the Deep Space Network.

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An intergalactic spaceship arrives at a distant planet that rotates on its axis with a period of T. The spaceship enters a geosynchronous orbit at a distance of R.

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(a) Radius's general expression is  R = ∛T²GM/4π²

(b)The planet's mass during its geosynchronous orbit is 4.9 × 10²⁵ kg.

We are given that,

T = period of the orbit = 26hours

r = radius of the orbit = = 2.1 × 10⁸ m.

G = gravitational constant = 6.674×10⁻¹¹ m³⋅kg⁻¹⋅s⁻²

M = mass of the planet

Putting the value in radius equation we get,

R = ∛T²GM/4π²

8.98 ×10⁷ m = ∛ (26 × 60 × 60)² ×( 6.67 ×10⁻¹¹) M/ 4×(3.142)²

M = (8.98 ×10⁷ m ×39.49 )/ (∛2.86 × 10¹⁸)

M = 4.9 ×10²⁵

As a result, the planet has a mass of  4.9 ×10²⁵kg throughout its geosynchronous orbital period.

The complete question is given below,

An intergalactic spaceship arrives at a distant planet that rotates on its axis with a period of T. The spaceship enters a geosynchronous orbit at a distance of R. a) From the given information, write a general expression for the mass of the planet in terms of G and the variables from the problem statement. b) Calculate the mass of the planet in kilograms if T = 26 hours and R = 2.1 × 108 m.

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If today is October 31st and we view a third quarter, on what date did we observe
the last new moon?

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If it's October 31 and we can see a third quarter, then means we can see the last new moon, which was on October 10.

What does the moon mean?

The Moon, the largest and brightest satellite in our night sky, stabilizes the Earth's axial wobble, which results in a generally constant climate. This makes Earth a rather more livable planet. Moreover, it brings about tides, which produce a pattern that has aided people for countless years.

How is the moon made?

Approximately 43% of the moon's surface is made up of oxygen, 20% of it is silicon, 19% is magnesium, 10% is iron, 3% is calcium, 3% is aluminum, 0.42% is chromium, 0.18% is titanium, and 0.12% is manganese. Traces of water that may have come from far beneath have been discovered by orbiting spacecraft on the lunar surface.

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a 1.80-kg block slides on a rough, level surface. when it is traveling at 2.00 m/s, the block hits a linear, ideal spring and compresses it by a distance of 11 cm before (momentarily) coming to rest. the coefficient of kinetic friction between the block and the surface is 0.56. what is the force constant of the spring?

Answers

The force constant of the ideal spring sliding on a rough surface with a speed of 2m/s is 413.22 N/s.

Force constant:

The force constant or spring constant is a measure of the stiffness of a spring. It is the force per unit deformation of the spring. Its SI unit is N/m.

we need the concept of kinetic energy and work to solve this problem:

[tex]ke = \frac{1}{2} \times m{v}^{2} [/tex]

where, m is mass of the block and v is the velocity of the block.

[tex]ke = \frac{1}{2} \times 1.8 \times {2}^{2} [/tex]

ke = 3.6 J

now, work done by frictional force is:

work = Fd

W = Ukmgd

( where Uk is coefficient of kinetic friction)

W= 0.56× 1.8× 10× 0.11

W = 1.1 J

now, according to conservation of energy:

Work done = potential energy + kinetic energy

W= U + KE

U = KE - W

3.6J - 1.1J

2.5 J

now, potential energy of compressed spring:

[tex]u = \frac{1}{2} \times k {x}^{2} [/tex]

[tex]2.5 = \frac{1}{2} \times k \times {0.11}^{2} [/tex]

[tex]k = \frac{2.5 \times 2}{ {0.11}^{2} } [/tex]

k = 413.22

hence, force constant of the spring is 423.22 N/m

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a current-limiting circuit breaker performs in a manner similar to conventional thermomagnetic circuit breakers at currents below a threshold of about?

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A current-limiting circuit breaker performs in a manner similar to a conventional thermomagnetic circuit breaker at currents below a threshold of about 1000A.

What is Thermomagnetic?

The study of the relationships between heat, work, temperature, and energy is known as thermodynamics. The rules of thermodynamics explain how energy in a system evolves and whether a system can make use of its environment to produce productive work.

What is Current?

Electric current is a term used to describe how much electricity flows across a circuit and how it flows in an electronic circuit. Amperes are used to measure it. The more electricity flowing across the circuit, the higher the ampere value.

Hence, a current-limiting circuit breaker performs in a manner similar to a conventional thermomagnetic circuit breaker at currents below a threshold of about 1000A.

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an object of mass m is launched at an angle above the horizontal at speed v. find the maximum height g

Answers

 The maximum height the object reaches is [tex]\frac{v^{2} sin^{2}x}{2g}[/tex].

How to measure the maximum height in projectile motion?

When a particle is hurled obliquely near the surface of the earth, it travels along a curved route while accelerating continuously in the direction of the planet's centre (we assume the particle stays close to the surface of the globe). Such a particle's motion is known as projectile motion, and its route is referred to as a projectile. When a particle is sent into the air at a certain speed, the only force acting on it is the acceleration caused by gravity (g). This downward vertical acceleration has an effect. The fact that there is no acceleration in the horizontal direction indicates that the particle's horizontal velocity stays constant.

The highest vertical location along the object's flight is considered to be its greatest height. The range of the bullet is defined as its horizontal displacement. The starting velocity of the item affects the projectile's range.If v is the starting speed, g is the gravitational acceleration, and H is the highest point that may be reached in metres, then is the beginning speed's angle from the horizontal plane (radians or degrees).

The following formula determines the projectile's maximum height:[tex]\frac{v^{2} sin^{2}x}{2g}[/tex]

Here x is the angle.

this can be derived using the equation v^2 = u^2 - 2as where v = 0 m/s and u = usinx.

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A peron lift a 4. 5 kg cement block a vertical ditance of 1. 2 m and then Carrie’ the block horizontally 7. 3 m. Determine the work done by the peron and by the force of gravity

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The person's work is positive, with a rating of 52.92 J.

Gravity's work is negative, with a value of -52.92 J.

define distance ?

Distance is a numerical or sometimes qualitative measurement of the distance between objects or points. In physics or everyday use, distance can refer to physical length or estimate based on other criteria (e.g. "two particles above"). Since spatial perception is a rich source of conceptual metaphors in human thought, the term is also often used metaphorically to refer to a measure of the degree of difference between two similar objects ( such as the statistical distance between probability distributions or the distance between text strings) or the degree of separation (as illustrated by the distance between people in a social network). Most concepts of distance, both physical and metaphorical, are formalized in mathematics using the concept of metric space.

m = 4.5 kg is the mass of a cement block.

The block raises the vertical distance by d=1.2m.

d' = 7.3 m is the horizontal distance covered by the block.

Since the person raises the block, there is some displacement of the block. As a result, the individual will accomplish good job. And the person's work is saved in the form of block potential energy.

w=mgd

=4.5x9.8x1.2

=52.92 J

As the gravity will oppose the block's motion, thus it will produce negative work on the block. Therefore,

Gravity's work = - (Work done by person)

Gravity work = - 52.92 J

Thus, gravity's work is -52.92 J.

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Do naps count as sleep?

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No, naps are not count as sleep. Power naps are very crucial in person daily activity.

There are many advantages to be had from a decent naps. Snoozing can diminish weariness, further develop readiness and memory, and lift efficiency. It can likewise assist with loosening up you and diminish feelings of anxiety.

Moreover, naps have a not insignificant rundown of different advantages, including further developed temperament, response time, and memory - for that reason youngsters need weighty snoozing after school. Snoozing additionally advances muscle building. So in the event that you're searching for a simple method for working on your general wellbeing and prosperity, exploiting the many advantages of resting is an extraordinary spot to begin!

Napping can be helpful to your wellbeing in some ways, yet it doesn't consider sleep. Naps don't consider rest on the off chance that they happen during the day-they are viewed as a type of rest all things being equal!

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If the coefficient of kinetic friction between the floor and bag is 0. 15, how much thermal energy does marissa create?.

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If Marissa drags a 23kg duffel bag 18m to the gym. The thermal energy Marisa will produce is 608.58.

The energy in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a subfield of physics that examines how work is done as a result of heat being exchanged across various systems.

Friction would provide work that is equal to heat energy.

The force of friction is 225.4 x 0.15, or 33.81 N, which is equal to 23 x 9.8 N.

The frictional effort of 33.81 x 18 = 608.58 J is now converted into thermal energy of 608.58 J.

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why is frankenstein attracted to science? how does he look back on his attraction from his current perspective?

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Frankenstein is attracted to science because he is a passionate and ambitious individual who is curious about the unknown.

Frankenstein is attracted to science because of the limitless possibilities it holds. He is drawn to the idea of being able to unlock the secrets of life and death, and create something entirely new. He is driven by the idea that science and technology can be used to improve the world and make life better for all.

He looks back on his attraction to science from his current perspective with a sense of regret and guilt, as his ambition to succeed in his experiments leads him to create a monster that causes immense suffering. He wishes that he had not been so ambitious and had instead explored other areas of study.

From his current perspective, however, Frankenstein looks back on his attraction to science with a sense of regret. He realizes that his ambition was misguided, and that his creations were not meant to be used for the betterment of mankind. He regrets the destruction and chaos that his creations caused, and the pain and suffering they inflicted on innocent people. He now understands that science and technology are powerful tools, but they must be used responsibly and with caution. He also realizes that there are limits to what science can do and that some things are simply beyond human understanding.

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a converging lens made of crown glass has a focal length of 15.0 cm when used in air. if the lens is immersed in water, what is its focal length?

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If the lens is immersed in water, its focal length will be 53.6 cm.

What is focal length of a converging lens?

A converging lens is that causes parallel rays (as of light) to come to a focus. By noticing that parallel light rays entering and leaving the lens would undergo fewer variations in index of refraction if it were surrounded by water, we may provide a conceptual response to this question. They would thus bend less and concentrate further away from the lens.

The focal length of a thin lens in air is the separation between its major foci, also known as focal points, and its center. The focal length is the distance at which a beam of collimated light will be concentrated to a single spot for a converging lens (for instance, a convex lens).

We can answer this question as follows;

1/f = (1.52−1)( 1/R1 - 1/R2) = 1/50

But lens surrounded by water n = 1.3333 we have

1/f = ((1.52/1.3333)−1)( 1/R1 - 1/R2)

Solving for f we get f=53.6cm

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is the sports car in question 9 has twice the speed of the minivan which vehicle has the higher kninetic energy wh

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The sports car has more kinetic energy.

The sports car will have more kinetic energy as it has more mass than a minivan.

What is the relationship between kinetic energy and mass?

The equation for Kinetic Energy is

KE = 1/2 mv2.

Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object.

Objects with greater mass can have more kinetic energy even if they are moving more slowly, and objects moving at much greater speeds can have more kinetic energy even if they have less mass.

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Due to its higher mass than a minivan, the sports vehicle will contain more kinetic energy.

What are some instances of kinetic energy?

Kinetic energy, which may be seen in the mobility of an item or nuclear particle, is the fuel of motion. Kinetic energy is present in every particle and moving thing. Illustrations of kinetic energy in action include a person walking, a baseball soaring through the air, a piece of food sliding from a table, and then a charged molecule in an electric field.

What are the top 3 kinetic energy facts?

An object's kinetic energy multiplies by four when its speed doubles. The Greek word "kinesis," which implies motion, is where the word "kinetic" originates. A collision is one way that kinetic energy may be transmitted from one item to another.

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a block with a mass of 200 g is connected to a light horizontal spring of force constant 5.00 n/m and is free to oscillate on a horizontal, frictionless surface. find the period of its motion.

Answers

A 200-gram block may freely oscillate on a longitudinal, stationary object for 1.26 seconds while being attached to a light longitudinal spring with a force constant of 5.00 n/m.

m = 200g = 0.2 kg

A = 5cm = 0.05 m

A = 5cm = 0.05 m

k = 5 (N ÷ m)

T = 2π √m ÷ k, We may calculate the period and, thus, the frequency by measuring the length of one full oscillation. Be aware that the period in the case of a block is separate from the mass, but the period in the case of a mass on a spring is irrespective of the spring's length.

T = 2π √m ÷ k

T = 2π √0.2 ÷ 5

T = 1.26 s

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Label the atmosphere layers of a star

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Answer:

The layers of a star's atmosphere can include the photosphere, the chromosphere, and the corona. The photosphere is the layer of the star's atmosphere that is visible to us and is the source of the star's light. The chromosphere is the layer above the photosphere and is characterized by its reddish color. The corona is the outermost layer of the star's atmosphere and is characterized by its high temperatures.

Explanation:

What is the frequency of the wave if its time period is 4 seconds?

Answers

The frequency of a wave is 0.25Hertz  if its time period is 4sec. Frequency is said to be inversely proportional to time period.

Frequency alludes to the quantity of cycles in a specific unit of time. The justification for why the sky is blue or anything contains variety can be effectively made sense of by it. Moreover, it can likewise make sense of why the voice of certain people is profound while for others it isn't profound. Likewise, frequency plays a major effect on the notes of a piano or other instruments.

This number of events is unquestionably a fundamental property of a wave. The waves encompass individuals consistently. Moreover, light is an electromagnetic wave and the fan is a sound wave. A wave is surely a vibration and conveys energy with it. Generally imperative, the quantity of waves passing by each second alludes to the recurrence of the wave. Also, its estimation happens in Hertz (Hz).

So, we know that frequency is defined as inversely proportional to time period.

So, frequency=1/Time period

=>v=1/4

=>v=0.25/sec

or v=0.25Hertz.

Hence, frequency of wave is 0.25Hertz.

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Astronomers use the _______ of stars to determine how hot they are and their _______ to estimate how far away they are.

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Astronomers use the colour of stars to determine how hot they are and their brightness to estimate how far they are.

When astronomers are in space and studying the nature of stars.

The colour of the star change according to the temperature of the star. If the star is more red in colour it is supposed to have more temperature that of a star which has a fade colour.

To estimate the distance of the stars from the astronomers, they use the brightness of the star as a factor to calculate the distance between them.

If the brightness of the star is less it is supposed to be more distant from the astronomers and vice versa.

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Calculate the velocity of a non-relativistic electron whose de broglie wavelength is 3.637 nm.

Answers

The velocity of a non-relativistic electron whose de Broglie wavelength is 3.637 nm is 5.82 x 10^6 m/s.

The velocity of a non-relativistic electron can be calculated using the formula

v = h / mλ

where

h  = Planck's constant

m  = the mass of the electron

λ  = the de Broglie wavelength of the electron.

Now using the above formula, we can easily find the velocity.

We know that the mass of the electron is 9.11 x 10^-31 kg,

the velocity of the electron can be calculated as follows:

v = (6.63 x 10^-34 m^2 kg / s) / (9.11 x 10^-31 kg * 3.637 x 10^-9 m)

This comes out to be approximately 5.82 x 10^6 m/s.

Therefore, the velocity of a non-relativistic electron whose de Broglie wavelength is 3.637 nm is 5.82 x 10^6 m/s.

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What makes infrared waves different from other waves?

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Infrared rays have longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption. So, infrared objects can reveal objects in the universe that cannot be seen in visible light using optical telescopes.

The wavelengths of infrared waves range between 700 nm to 1 mm. They are longer than visible rays but shorter than radio waves. They are not visible by human eye.

Infrared radiation can promote local blood circulation and reduce muscle tension. Examples of traditional medical applications of infrared radiation include the relief of muscle pain and tension, as well as auto immune diseases or wound healing disorders.

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every second, the sun converts about 600 million tons of hydrogen into 596 million tons of helium. the remaining 4 million tons of mass is __________.

Answers

The missing 4 million tons of matter are converted to energy, according to Einstein's equation [tex]E=mc^{2}[/tex].

Our Sun is a huge, massive, spherically shaped object, containing about 99.8% of all the matter in our Solar System.The Sun is a typical star, and is also the star that is nearest to the Earth. It is composed of a mixture of 73% hydrogen, 25% helium, and 2% other elements by weight.The nuclear fusion reactions that produce the sun's energy are converting hydrogen into helium, changing the relative amount of these two elements present in the Sun. In each nuclear conversion 4 hydrogen atoms are combined to produce a helium atom. This reaction occurs throughout the Sun and by this process our Sun converts 600 million tons of hydrogen into 596 million tons of helium every second. The missing 4 million tons of matter are converted to energy, according to Einstein's equation [tex]E=mc^{2}[/tex].As far as we know, only half a billionth of this energy reaches the Earth. The rest is radiated out into space.

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Both ?? PLEASE PLEASE THANK YOU SO MUCH

Answers

Answer:

18 kg·m/s

26 kg·m/s

Explanation:

5)  J = Ft = (6N)(3s) = 18 kg·m/s

6)  J = Ft = (6N)(3s) = 18 kg·m/s

J = Δp = p2 - p1

p1 = mv = (4kg)(2m/s) = 8 kg·m/s

p2 = J + p1 = 18 kg·m/s + 8 kg·m/s = 26 kg·m/s

A 0.65 kg ball is attached to the end of a string. It is swung in a vertical circle of radius 0.50 m. At the top of the circle its velocity is 2.8 m/s.

Answers

In a vertical circular motion If the distance is measure from a fixed point is, it will be same at each point. The minimum velocity that the ball must have to make it around the circle is 8.57 m/s.

What is vertical circular motion?

In a vertical circular motion If the distance is measure from a fixed point is, it will be same at each point.

According to the Given information:

The radius of the vertical circle is 1.5 m.

As the ball rotates in the vertical circular motion with constant velocity. Thus the speed of the ball will be same for each point.

Therefore the centripetal force should be same for each point which is,

Here, m is the mass v is the velocity and R is the radius. This centripetal force is balanced by the tension action on the ball (towards the center) and the gravitational force acting on it.

Therefore, For the minimum velocity, the value of tension should be zero.

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Question seems to be incomplete. The complete question be like this

Draw a free body diagram for the ball when it is at the top of the circle. Next to that diagram indicate the direction of its acceleration b. Use that free body diagram to set up the equations needed to determine the Tension in the string. c. Solve those equations for the Tension in the string.

Need help! Thanks lots!

Answers

The air bag reduces the force by increasing the time it takes the passenger to stop moving.

How does airbag make people safer ?Despite the fact that airbags are a widespread and necessary safety feature, few of us understand how they function in our cars. A processing unit chooses which airbags in the automobile to deploy in a crash based on data from any of a myriad of sensors.Depending on the severity of the crash, the frontal airbags can deploy with varied degrees of force. When the threshold is exceeded, an electrical pulse ignites a gas, triggering the airbags. This generates enough nitrogen gas in less than 30 milliseconds to fully inflate the airbag. Some airbags only deploy if the weight of a passenger in the relevant seat is detected, which means an airbag will not deploy if there is no passenger to protect.When you are involved in an automobile accident, airbags inflate when a sensor connected to your vehicle's airbag senses a collision. They are filled with nitrogen gas and deflate when the driver or passengers come into touch with the airbag.What is airbag system ?They're air cushions inflated in fractions of a second by a fast-acting inflator to protect you from your car's interior hardpoints, such as the dashboard, steering wheel, windscreen, and roof pillars, which are triggered during an accident. It inflates so quickly that it's already fully inflated when your body moves. If you're wondering where your airbags are, don't look in the steering wheel. They are embedded throughout the interior padding of the car, with perforated seams that allow them to deploy.

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a heat engine is operating between 287 c and 32 c. if the engine extracted 400 mj of energy from fuel, how many mj of energy could be used as mechanical energy?

Answers

A heat engine is operating between 287 c and 32 c. if the engine extracted 400 mj of energy from fuel, 4109.6 Jews mj of energy could be used as mechanical energy

Using the temperatures, a heat engine's efficiency is determined (lowest and highest).

The ratio of the system's provided heat to the desired work is considered the system efficiency. An engine's efficiency ranges from 0 to 1.

The efficiency of the engine is 27%, or 0.27. Since the heat was turned down due to the 3000 gems, we must find productive employment. Heat input and network efficiency are connected. That is the line. Qc was rejected by two W plus heat, leading to Qh. The cost of networking is composed of Nita W and Nita Qc. The network completed is identical to Nita. Q C is split into two halves. As a result, we must divide our efficiency, which is 0.27, by 3000. The engine's work is represented by this. Let's calculate the result of 0.27 multiplied by 3000 divided by 1. 1109 and 0.6 gems are the answer. He rejected our quote, which is +110 9.6 plus three thousand. 4109.6 Jews is quite close to the heat input.

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a 0.145 kg baseball is pitched at 39 m/s is hit on a horizontal line drive straight back to the pitcher. what is the avaerage force

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Ft = mv, where the average force is 13195N.

At this point, v = 39.0 m/s - (52.0 m/s) = 91 m/s.

Because the ball ultimately moves in this same reverse direction since making contact to it, 52 is negative.

F = 13195N

Any impact which could alter an item 's movement is referred to as a force in physics. Every body having weight can modify the velocity, or accelerate, in response to something like a force by shifting away off rest, for example. Subjectively, a concerted effort or a pull may also be employed to represent force.

As a vector quantity, a force is one that has simultaneous magnitude and direction. It is calculated using newtons as the SI unit of measure (N). It is a mechanically accepted quantity. F is a symbol that stands for force (formerly P).

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The cosmic microwave background is almost perfectly uniform in all directions, except for very small deviations in its temperature. what do scientists think these small deviations represent?

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These small deviations represent regions of slightly higher density that made it possible for galaxies to form.

In big Bang cosmology, the cosmic microwave background (CMB, CMBR) is electromagnetic radiation that could be a remnant from an early stage of the universe, also called "relic radiation". The CMB is faint cosmic heritage radiation filling all areas. it's far a vital source of records of the early universe because it's by far the oldest electromagnetic radiation within the universe, dating to the epoch of recombination when the primary atoms were fashioned. With a conventional optical telescope, the distance between stars and galaxies (the heritage) is absolutely dark (see: Olbers' paradox). but, a sufficiently sensitive radio telescope indicates a faint heritage brightness, or glow, nearly uniform, that is not associated with any megastar, galaxy, or different item. This glow is most powerful in the microwave region of the radio spectrum.

CMB is landmark proof of the large Bang origin of the universe. when the universe become younger, before the formation of stars and planets, it turned denser, lots warmer, and full of an opaque fog of hydrogen plasma. because the universe elevated the plasma grew cooler and the radiation filling it extended to longer wavelengths. whilst the temperature had dropped enough, protons and electrons blended to shape impartial hydrogen atoms. not like the plasma, those newly conceived atoms couldn't scatter the thermal radiation with the aid of Thomson scattering, and so the universe has become obvious.

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A piano tuner stretches a steel piano wire with a tension of 765 n. the steel wire has a length of 0.900 m and a mass of 6.75 g. a. What is the frequency f1 of the string's fundamental mode of vibration?b. What is the number n of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to f = 16 kHz?

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A)The frequency f1 of the string's fundamental mode of vibration is 177.42 Hz.

B) The number n of the highest harmonic is 90.

The Tension in the String is 765 N.

Steel wire length L is 0.900 m

The mass of the string m is 6.75 g = 6.75 × [tex]10^{-3}[/tex] kg.

Frequency of the string = n ×(Velocity of the wave on the String/(2L) )

The velocity of the wave on the string V=[tex]\sqrt{} \frac{T}{M/L}[/tex]

V= [tex]\sqrt{} \frac{765}{675 * 10^{-3}/0.9}[/tex]

v = 319.37 m/sec

For Fundamental Frequency n = 1

Frequency = V / 2L

f = 319.37 / (2*0.9)

f = 177.42 Hz

Therefore Fundamental Frequency of the String is 177.42 Hz.

Frequency f = 16 kHz

The velocity of the wave on the string v = 319.37 m/sec

Frequency of the string f = n ×(Velocity of the wave on the String v /(2L) )

n = f × (2L / v)

n = 16×10³ (2*0.9 / 319.37)

n = 90.17

n ≈ 90

The number of Harmonics is 90.

In physics, anxiety is described as the pulling pressure transmitted axially with the aid of the manner of a string, a rope, chain, or comparable object, or by way of each stop of a rod, truss member, or comparable three-dimensional object; anxiety may also be described because the action-response pair of forces acting at every end of said factors. tension might be the alternative to compression.

On the atomic level, whilst atoms or molecules are pulled other than every other and benefit potential electricity with a restoring force nevertheless present, the restoring force may create what is also referred to as tension. every stop of a string or rod under such anxiety ought to pull on the item it's far attached to, to be able to repair the string/rod to its secure length.

Anxiety (as a transmitted force, as a motion-response pair of forces, or as a restoring pressure) is measured in newtons in the international system of gadgets (or pounds-pressure in Imperial devices). The ends of a string or different object transmitting tension will exert forces on the gadgets to which the string or rod is attached, inside the route of the string on the factor of attachment. these forces because of tension also are called "passive forces". There are fundamental opportunities for structures of items held through strings: both accelerations are 0 and the system is therefore in equilibrium, or there may be acceleration, and consequently, an internet force is present in the gadget.

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according to kirchhoff's current law, the sum of the currents entering a closed surface must equal the sum of the currents leaving. explain how the law is satisfied for the closed surface shown when we use a real op amp in this circuit.

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Taking into mind the OV 1 kNXų Closed Surface 2 mA currents in the ground connections and power supply connections of a real op amp, KCL is satisfied.

The algebraic sum of all currents entering and leaving a node must equal zero, according to Kirchhoff's Current Law, also known as KCL.

This law is used to explain how a charge travels to and from a wire junction or node. With this knowledge, let's look at an illustration of the legislation in action, its significance, and how it came to be.

Since no charge is lost, the total current flowing into a junction or node equals the charge leaving it. To put it another way, every current entering and leaving the node must have a zero algebraic sum. This Kirchhoff law property, where I(exit) + I(enter) = 0, is known as charge conservation.

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