By utilizing the idea of parallax, we can decide how cosmologists decide distances to stars.
Presently, we perceive how parallax estimations can be utilized to decide the distances, one of the realities we know is that if we have any desire to gauge the distance of divine bodies, we are familiar with the parallax, first and foremost, point. That's what it intends assuming we can quantify tiny parallax points, we can gauge enormous distances moreover.
The purpose for why we can not make precise estimations of parallax past a specific distance is that as the distance of the star from earth builds the parallax point turns out to be tiny.
Subsequently, presently we comprehend how parallax estimations are utilized.
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a ball is thrown from point x and follows path xyz. air resistance is negligible. which quantity is zero when the ball is at the highest point y of the path?
The quantity which is zero when the ball is at the highest point y of the path is The horizontal component of the ball's acceleration.
This is the question of simple oblique projectile as the air resistance is zero it becomes a very ideal case. In a projectile the acceleration due to gravity is always acting downwards so, vertical component can never be zero, if we talk about the velocity if it becomes zero, the ball should fall on the spot so the horizontal acceleration which would be zero at the highest point as now the ball will travel only with the velocity it has acquired till now and there qould be zero acceleration.
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given the force field f, find the work required to move an object on the given orientated curve. on the parabola from to
the effort necessary to move a object along the designated oriented curve. regarding the parabola from it to 16
What do energy and work mean?Work is the process of transmitting energy into a target item to cause some displacement. The definition of energy is the capacity for work. The work produced is consistent. There are many different types of energy, including kinetic energy and potential energy.
What are the different kinds of work?There are three different types of job that can be categorized. They are productive work, productive work, and productive work. The relationship among force and displacement has an impact on the type of job. Positive work is the kind of work that occurs when an applied force moves an object in that direction.
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Noise cancelling headphones" are a kind of headphones which decrease the amount of background noise that get into your ears when you wear them. A On what physical phenomena do these headphones depend on?
Noise cancelling headphones works on the principle of destructive interference.
Noise cancellation is the process of reducing unwanted background and ambient sounds through the use of passive and active noise control methods.While passive noise cancellation minimizes ambient noise by creating a “physical shield” to muffle sound, active noise cancelling (ANC) takes a different approach by “neutralizing” incoming sound waves from your surroundings.ANC headphones are equipped with tiny microphones that emit sound waves of opposing signals to that of incoming sound waves from your environment, thus canceling each other out. It’s like adding +3 and -3, where the resulting value is zero (silence).The microphones pick up sound from both inside and outside the headphones. Now that the type of incoming sound signals is determined, the ANC chipset will run algorithms that will invert the sound waves and release an opposing signal to cancel out the incoming ones from the environment.To know more about sound visit:
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when a heavy metal block is supported by a cylindrical vertical post of radius r, it exerts a force f on the post. if the diameter of the post is increased to 2r, what force does the block now exert on the post?
When a heavy metal block is supported by a cylindrical vertical post of radius r, it exerts a force f on the post. if the diameter of the post is increased to 2r, F force does the block now exert on the post.
A force is an influence that has the power to alter an object's motion. A force can cause an object with mass to accelerate as it increases its velocity, like when it moves away from rest. A simple way to express force is with a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is computed using the SI unit of newton (N). F is the symbol for force. (formerly P). The net force exerted on an object is equal to the rate at which its momentum varies over time, according to the original formulation of Newton's second law. According to this law, if an object's mass remains constant, its acceleration should be inversely proportional to the mass of the item and directly proportional to the net force acting on it. Concepts related to force include thrust, which increases an object's velocity; drag, which decreases an object's velocity; and torque, which alters an object's rotational speed.
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How have advances in genetic testing and blood typing helped mitigate the effects of blood
reactions and diseases for many people?
Genetic testing and blood typing helped mitigate the effects of blood
reactions and diseases for many people by using Cytogenetic Testing.
What is Cytogenetic Testing?
In cytogenetics, the entire chromosome is examined for anomalies. Under a microscope, the chromosomes of a human cell that is dividing can be seen plainly. The easiest cells to obtain for cytogenetic study are white blood cells, particularly T lymphocytes since they can divide quickly in cell culture and may be simply isolated from blood. For cytogenetic analysis, cells can also be cultivated from various tissues, including bone marrow (for leukaemia), amniotic fluid (for prenatal diagnosis), and other tissue biopsies.
Chromosomes are preserved, dispersed on microscope slides, and stained after many days of cell culture. Each of the chromosomes can be recognised separately thanks to the staining techniques used in routine examination. Analysis of chromosomal structure is possible thanks to the unique bands of each chromosome that staining reveals.
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a floating leaf oscillates up and down two complete cycles in one second as a 10-meter long water wave passes by. what is the wave's speed?
The wave's speed is 10 meters per second that oscillates up and down two complete cycles in one second as a 10-meter long water wave passes by.
Step 1: Calculate the distance traveled by the leaf in one second
The leaf oscillates up and down two complete cycles in one second, so it must travel a total distance of 20 meters in one second.
Step 2: Calculate the wave's speed
We can calculate the wave's speed by dividing the distance traveled by the leaf (20 meters) by the time it took for the wave to pass (1 second):
Wave's speed = 20 meters/1 second = 20 meters/second
Therefore, the speed of the wave is 20 meters/second.
Oscillation is a regular, back-and-forth movement between two points. A cycle is a single complete movement from one point to another and back again. When something oscillates up and down two complete cycles, it means it moves up and down between two points twice, completing one full movement in each direction before returning to its starting point.
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what is a resultant vector
Answer:
Resultant vector is a single vector that produces the same effect as is produced by a number of vectors collectively.
what is the magnitude of the acceleration of a skydiver at the instant she is falling at one-half her terminal speed?
a = 7.35 m/s ²
Terminal velocity is highest velocity which is attained by the object when it is falling through air.
we know that at terminal velocity
a=g
here g = 9.8m/s
The formula,
ma = mg - m(1/2)²g
a = g (1 - 1/4)
a = 3/4 g
a = 3/4 X 9.8
a= 7.35 m/s ²
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a 2.00 kg metal object requires 1.00*104 j of heat to raise its temperature from 20.0c to 40.0c what is the specific heat capacity of the metal
The specific heat capacity is 250 J/kg.°C
What is specific heat capacity?The amount required to increase a temperature per unit of mass is known as specific heat capacity. It is a constant having various values depending on the substance.
Using the formula for heat capacity:
ΔQ = mcΔT
ΔQ is the heat capacity, unit is in Joules (J)
m is the mass, unit is in kg
c is the specific heat capacity, unit is in J/kg.°C
ΔT is the change in temperature, unit is in °C
ΔT = T₂ - T₁
where
T₂ final temperature, unit is in °C
-T₁ initial temperature, unit is in °C
For the given information:
ΔQ = 1.00*10^4 Joules (J)
m = 2 kg
c = c J/kg.°C
ΔT is the change in temperature, unit is in °C
ΔT = T₂ - T₁ = 40 - 20 = 20 °C
Thus from ΔQ = mcΔT
1.00*10^4 = 2 x c x 20
c = 1.00*10^4 / 40 = 250 J/kg.°C
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the length of the sliding rod is 0.1 m and its speed is 2.0 m/ and b is 0.60 t. a) if the total resistance of the loop is 0.05 , what is the induced current,
The induced current produced due to moving sliding rod having resistance 0.05 is 2.4 A.
Induced current:
Any change in the magnetic field associated with a coil of wire will cause an emf to be induced in the coil. This emf is called induced emf and if the conductor circuit is closed, current will also circulate through the circuit. This current is called induced current.
Given, length of sliding rod, l= 0.1 m
Magnetic field = 0.60T
Velocity = 2m/s
Resistance of the loop = 0.05
Emf Induced = Blv
induced current = Blv/R
[tex]i = \frac{0.6 \times 0.1 \times 2}{0.05} [/tex]
[tex]i = \frac{0.12}{0.05} [/tex]
[tex]i = 2.4[/tex]
so, the current produced in sliding rod moving withspeed of 2m/s in magnetic field 0.6 T and having resistance of loop 0.05, is 2.4 A
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During most of its lifetime, a star maintains an equilibrium size in which the inward force of gravity on each atom is balanced by an outward pressure force due to the heat of the nuclear reactions in the core. but after all the hydrogen fuel is consumed by nuclear fusion, the pressure force drops and the star undergoes a gravitational collapse until it becomes a neutron star. in a neutron star, the electrons and protons of the atoms are squeezed together by gravity until they fuse into neutrons. neutron stars spin very rapidly and emit intense pulses of radio and light waves, one pulse per rotation. these pulsing stars were discovered in the 1960s and are called pulsars.A star with the mass (M=2.0×10^30kg) and size (R=3.5×10^8m) of our sun rotates once every 35.0 days. After undergoing gravitational collapse, the star forms a pulsar that is observed by astronomers to emit radio pulses every 0.200 s. By treating the neutron star as a solid sphere, deduce its radius.
The radius is 180020 m and the velocity of the star is 5652628 m/s.
Mass of star = m = 2 X 10³⁰ Kg
Radius of star = 3.5 X 10⁸ m
The star rotates around the sun every 35 days.
Time period = t = 35 X 24 X 60 X 60 = 3024000 s
The final time t' = 2 s
Since, angular momentum L is conserved in this process. We can use the formula =
= L = ωI
Here, I = moment of inertia
= I = (2mr²)/5
Thus,
= L = ω X (2mr²)/5
= L = (2mr²)/5 X (2π/t)
= L = (4πmr) / 5t
Now, since L (initial) = L' (final),
= (4πmr) / 5t = (4πmr) / 5t'
Hence,
= (r²/t²) = (r'²/t'²)
Which means,
= r' = r X √(t'/t)
= 7 X 10⁸ X √(0.2/3024000)
= 1.80020 X 10⁵
= 180020 m
And we calculate the velocity of a point on the equator by dividing the final circumference over the final period:
= v = c/t
= v = 2πr'/t'
= v = 2π X 180020/0.2
= v = 5652628 m/s
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The complete question:
During most of its lifetime, s star maintains an equilibrium size in which the inward force of gravity on each atom is balanced by an outward pressure force due to the heat of the nuclear reactions in the core. But after all the hydrogen fuel is consumed by the nuclear fusion, the pressure force drops and the star undergoes a gravitational collapse until it becomes a neutron star. In a neutron star, the electrons and protons of the atoms are squeezed together by gravity until they fuse into neutrons. Neutron stars spin very rapidly and emit intense pulses of radio and light waves, one pulse per rotation. These pulsing stars were discovered in the 1960's and are called pulsars.a) A star with the mass (M=2.0x10^30 Kg) and size (R=7.0x10^8 m) of our sun rotates once every 35 days. After undergoing gravitational collapse, the star forms a pulsar that is observed by astronomers to emit radio pulses every 0.10 s. By treating the neutron star as a solid sphere, deduce its radius.b) What is the speed of a point on the equator of the neutron star? Your answer will be somewhat too large because a star cannot be accurately modeled as a solid sphere. Even so, you will be able to show that a star, whose mass is 10^6 larger than the earth's, can be compressed by gravitational forces to a size smaller than a typical state in the United States!
a railroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the kinetic energy of the system
A railroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the kinetic energy of the system is "half as much as before". The correct option is (B).
What is kinetic energy?
Kinetic energy, which may be seen in the movement of an object, particle, or group of particles, is the energy of motion.
K.E. = 1/2 m v2
What is difference between kinetic energy and potential energy?
Potential energy is the energy that is held in reserve in a system or object as a result of its position or configuration. An object's kinetic energy is measured in relation to stationary and moving items in its immediate environment.
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the gold foil experiment led to the conclusion that each atom in the foil was composed mostly of empty space because most alpha particles directed at the foil
Rutherford’s experiment with gold foil is known as gold foil experiment.
Gold-foil experiment:
Gold-foil experiment was given by Rutherford.In his experiment, the α-particles were made to come down on a thin gold foil.Many of the α-particles passed linearly through the gold foil.Some of the particles deviated at small angles.One out of every 12000 particles appeared to bounce.Conclusion of Rutherford's model of an atom:
The space inside an atom is almost empty as most of the α-particles passed without deflection through the gold foil.The positive charge occupies a minimum space which indicates that very few particles were diverted from their path.A very small proportion of α-particles were diverted by 180o, indicating that all the positive charge and mass of the gold atom were concentrated in a very small volume within the atom.To know more about atoms visit;
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for an electromagnetic wave moving through vacuum, what is the ratio of the magnitude of the electric field to the magnetic field equal to?
The velocity of light, defined as c = 3.00 108 m/s, is the proportion of the strength of something like the electrostatic potential towards the magnetism of such an electromagnetic field travelling through with a suction.
As an electromagnetic radiation traveling out via a suction, this electrical course's amplitude divided either by magnetism field's intensity equals the velocity of light, c.
Two distinct elements make up an electromagnetic wave are really the electromagnetic current and indeed the magnetosphere. In the same way in which the gravitational flux is an unit vector that represents the pressure the waves exerts on ferromagnetic materials, the electrostatic force is an unit vector that represents the pressure the waves exerts on energetic particles.
The rate of a wave's movement throughout a vacuum is directly proportional to the speed of lights, or c. This is equivalent to the proportion of the magnetism field's to electrical field's rate of transmission. These two fields should proceed at exactly the same velocity, or the rate of light, in order to travel as electromagnetic fields simultaneously.
As a result, the electrostatic force to strong magnetic ratio for something like an electromagnetic radiation traveling across suction is equal to the velocity of lights, c.
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A newly discovered planet is found to have density 2pE and radius (RE/2)where pE and RE are the density and radius of Earth, respectively. The surface gravitational field of the planet is most nearly
A. 2.5 N/kg
B. 40 N/kg
C. 10 N/kg
D. 5 N/kg
Answer:
The answer would be D. 5 N/kg
A 2100-kg car is traveling at 25 m/s when it crashes into the rear end of a 1650-kg car traveling at 21 m/s in the same direction on nearly frictionless ice. The two cars become stuck together and slide on the ice. How fast do the two cars move together immediately after the collision?.
The two cars will move together immediately after the collision at a speed of = 23 m/s
For solving this question, firstly we need to know the formula for Linear momentum,
⇒ Linear Momentum (p) = mass x velocity
⇒ p = m x v
m = body mass
v = velocity
NOTE- both cars are moving in the same direction
Car 1 weighs 2100 kg and was moving with a velocity of 25 m/s
⇒ Momentum = 2100 x 25
⇒ Momentum = 52500 kg-m/s
Car 2 weighs 1650 kg and was moving with a velocity of 21 m/s
⇒ Momentum = 1650 x 21
⇒ Momentum = 34650 kg-m/s
Total momentum before collision = 52500 + 34650
= 87150 kg-m/s
Momentum after collision = (2100 + 1650)v
= 3750v
By the law of conservation of linear momentum,
⇒ Momentum before collision = Momentum after collision
⇒ 87150 = 3750v
⇒ v = [tex]\frac{87150}{3750}[/tex]
⇒ v = 23 m/s
Therefore, The two cars will move together immediately after the collision at a speed of = 23 m/s
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the heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.34 tons spread out over its length of 33 feet. what is its weight in newtons?
The heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.34 tons spread out over its length of 33 feet has the weight of 3332N.
What is weight?While mass is the most fundamental characteristic of matter and one of the fundamental quantities in physics. Mass is a term used to describe how much matter is there in a body. The kilogram is the SI unit of mass (kg).A body's mass does not alter at any point in time. only in rare instances where a significant quantity of energy is supplied to or taken away from a body. A nuclear reaction, for instance, results in the mass of the substance being reduced as a very little amount of matter is transformed into a very large amount of energy.
Weight gauges how much gravity is pulling on a body.W = mg is the weight formula. Since weight is a force, it has the same SI unit as a force, which is the Newton (N). When we look at how weight is expressed, we can see that it depends on both mass and the acceleration caused by gravity; while the mass may not vary from one location to another, the acceleration caused by gravity does.
Use the following conversion factors
1 ton = 1000 kg
mass = 0.34 tons = 0.34 x 1000 kg = 340 kg
We know w = mg = 340 x 9.8 = 3332 N
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a car goes around a curve with a radius [r] at a constant speed (v). then it goes around the same curve at a speed of 2v (doubled velocity) what is the centripetal force on the car as it goes around the second curve, when compared ot the first curve?
The new centripetal force becomes one fourth of the original force. Hence, this is the required solution.
A centripetal force is a net force that acts on an object to keep it moving along a circular path.
Centripetal and centrifugal forces are the forces experienced by rotating objects. The centripetal force keeps an object moving in a circle and is always pointed toward the center of that circle. For instance, the gravitational force of the sun is a centripetal force that keeps the Earth orbiting around it.
In the special case of the Earth's circular motion around the Sun or any satellite's circular motion around any celestial body the centripetal force causing the motion is the result of the gravitational attraction between them.
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a 12 h inductor carries a current of 2.0 a. at what rate must the current be changed to produce a 60 v emf in the inductor?
The current changed to produce a 60 v emf in the inductor is 5.0 A/s
ε=−L(di/dt), we may obtain the desired induced emf by setting
(di/dt) = -ε/L = 5.0
An inductor is a passive electronic component that temporarily stores energy in a magnetic field when electric current flows through the inductor's coil.An inductor is defined as a passive component that is used in most electrical circuits to store energy in the form of magnetic energy when electric current flows through it. It is also known as the coil, choke, or reactor. It is a two-terminal electrical component that is characterized by its inductance.
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Racing on a flat track, a car going 32m/s rounds a curve 56m in radius. What is
the car's centripetal acceleration?
Answer:
a = 32^2 / 56 = 2.29 m/s^2.
Explanation:
To find the car's centripetal acceleration, we need to use the formula a = v^2 / r, where a is the centripetal acceleration, v is the speed of the car, and r is the radius of the curve.
In this case, the car's speed is 32 m/s and the radius of the curve is 56 m, so the centripetal acceleration would be a = 32^2 / 56 = 2.29 m/s^2.
In both prokaryotes and eukaryotes, gene regulation most commonly occurs at the level of ______ initiation. transcription.
In both prokaryotes and eukaryotes, gene regulation most commonly occurs at the level of transcription initiation.
What aspect of gene regulation is the same in eukaryotes and prokaryotes?Many genes in prokaryotes and eukaryotes control their expression during transcription, the pathway's stage when DNA is converted to RNA. Given the high energy costs of transcription and translation (the RNA to protein phase in the cycle), this may make sense.
Structures are shared by bacterial and eukaryotic cells. All cells have DNA, cytoplasm, ribosomes, and plasma membrane. The layer of phospholipids that envelops and shields the cell from its surroundings is known as the plasma membrane, also known as the cell membrane.
Prokaryotic transcription plays a major role in regulating gene expression. Epigenetics, transcription, post-transcription, translation, and post-translation are the levels at which eukaryotic gene expression is regulated.
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A train accelerates from 30 km/h to 45 km/h in 15. 0 seconds. Find its distance if it travels during this time.
The distance travelled by the train during the time period of 15 seconds is 156.225 m.
It is given to us that -
The initial velocity of train = 30 km/h
The final velocity of train = 45 km/h
The time taken for this acceleration of train = 15 seconds
We have to find the distance travelled by the train during this time.
Let us assume that -
The initial velocity of train = u
=> u = 30 km/h = [tex]30 * \frac{5}{18} = 8.33 m/s[/tex] ----- (1)
The final velocity of train = v
=> v = 45 km/h = [tex]45 * \frac{5}{18} = 12.5 m/s[/tex] ------- (2)
The time taken by the train = t
=> t = 15 seconds ------- (3)
The acceleration of the train = a
=> [tex]a = \frac{v-u}{t}[/tex] ------- (4)
The distance travelled by the train = d
=> [tex]d = ut + \frac{1}{2} at^{2}[/tex] ------ (5)
Now, substituting the values of u from equation (1) and v from equation (2) in equation (4), the acceleration can be calculated as -
[tex]a = \frac{v-u}{t}\\= > a = \frac{12.5-8.33}{15}\\ = > a = \frac{4.17}{15} \\= > a = 0.278 m/s^{2}[/tex] ----- (6)
Again, substituting the values of u from equation (1), v from equation (2) and a from equation (6) in equation (5), the distance travelled by the train can be calculated as -
[tex]d = ut + \frac{1}{2} at^{2}\\= > d = 8.33*15+\frac{1}{2} *0.278 *15^{2} \\= > d = 124.95 + (0.139*225)\\= > d = 156.225 m[/tex]
Therefore, the distance travelled by the train during the time period of 15 seconds is 156.225 m.
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The engine of a car is developing a power of
90kW when it is moving on a horizontal road at
a constant speed of 100kmh. Estimate the total
horizontal force opposing the motion of the car.
With the use of power formula in dynamics, the magnitude of the opposing force is 3240 N
What is Power ?Power is the rate at which work is done. Power can also be the product of force and velocity. It is measured in Watt.
Given that the engine of a car is developing a power of 90kW when it is moving on a horizontal road at a constant speed of 100kmh.
Power = work / Time
P = F × s/t
P = FV
Where
P = 90 KWV = 100 Km/hF = ?Convert Km/h to m/s
100/3.6 = 27.77 m/s
Substitute all in the formula
90000 = F × 27.78
F = 90000/27.78
F = 3240 N
Therefore, the total horizontal force opposing the motion of the car is 3240 N
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In your own words, describe how an object's potential energy can be affected by its position.
Answer:
Explanation:
The higher the object is relative to some defined baseline (like the ground), the greater the potential energy.
Potential Energy = U = mgh
U is directly proportional to h (height of the object), so the greater the h the greater the U.
Electrical energy is used to turn the blades of a fan. The amount of energy transformed is seen here: 750 j electrical energy is transformed into 400 j kinetic or mechanical energy. What happened to the remaining 350 j of energy?.
Here is the energy that is left after the quantity of energy is transformed: 750 j of electrical energy is changed into 400 j of kinetic or mechanical energy, which is then turned into 0.32 j of efficient energy.
To run the fan, electrical energy is utilized.
Here, under the specified circumstances, 750 J of electrical energy is utilized to operate the fan, which is transformed into 400 J of kinetic energy. As a result, 350 J of energy is wasted due to various frictional and resistive losses.
Therefore, we may conclude that only 400 J of the 750 J available energy is used to power the fan, with the remaining energy being wasted as a result of friction.
Additionally, we can state that this fan's effectiveness will be
n = Useful ÷ Total
n = 400 ÷ 750
n = 8 ÷ 25
n = 0.32
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what event made it possible for photons to begin to travel freely through the universe when the universe was about 380,000 years old?
The universe had grown and cooled to the point where electrons could join nuclei to create neutral atoms.
Planets, stars, galaxies, and all other types of countable number and strength make up the entirety of space, time, and all that is contained inside them. The Big Bang theory is the best cosmological explanation for how the universe evolved.There are three categories of substance that make up the universe: normal matter, "dark energy," and "dark number." The atoms that make up stars, planets, people, and all other visible objects in the universe are part of regular memory.Unknown is the true size of the cosmos. But by measuring the observable cosmos, we may determine that the universe is currently about 95 billion mild years long.
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In a certain process, the energy change of the system is 250 kj. The process involves 480 kj of work done by the system. Find the amount of heat q transferred in this process.
The amount of heat Q is transferred in this process is -730 kJ, which means the heat is transferred into the surroundings.
Decrement in the energy of the system, ΔU = 250 kJ,
work done on the system, W = 480 kJ,
As we know according to the first law of thermodynamics,
energy can neither be created nor destroyed but can be transformed from one form to another. Further, the first law is given as,
ΔU = Q - W,
Where
ΔU = change in internal energy of the system,
{Positive if the internal energy increases and negative if the internal energy decreases}
Q = Heat transferred,
{Positive for heat transferred into the system and negative for heat transferred out of the system}
W = work done by the system or work done on the system,
{Negative for work done on the system and Positive when work is done by the system}
Now,
the energy of the system decreases by 250 kJ, so
ΔU = -250 kJ,
And, work is done on the system, so
W = - 480 KJ.
Substituting the value,
ΔU = Q – W
-250 = Q – (-480)
-250= Q + 480
-250 – 480 = Q
K = -780 KJ
Hence, the amount of heat Q is transferred in this process is -730 kJ, which means the heat is transferred into the surroundings.
In thermodynamics, heat is defined as the shape of power crossing the boundary of a thermodynamic gadget through the distinctive features of a temperature difference across the boundary. A thermodynamic device does not contain warmness. nonetheless, the time period is also regularly used to consult the thermal electricity contained in a system as an element of its internal electricity and that is contemplated inside the temperature of the device. For each makes use of the time period, heat is a shape of strength.
Warmth is power in the switch to or from a thermodynamic gadget, by a mechanism that includes the microscopic atomic modes of movement or the corresponding macroscopic properties.
The measurement of strength transferred as heat is referred to as calorimetry, done via measuring its impact on the states of interacting bodies. for example, warmness may be measured by means of the quantity of ice melted, or through trade in the temperature of a frame inside the environment of the machine. Inside the international gadget of units (SI) the unit of dimension for heat, as a shape of electricity, is the joule (J).
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In what ways is the wireless signal between the cell phones similar to the light that travels from the cell phone to your eyes?.
Mobile phones transmit and receive signals using electromagnetic waves, that is, wireless signal are electromagnetic waves which can travel through a vacuum, they do not need a medium or matter.
They are generated by electrical and magnetic particles moving at the same time (oscillating).
Characteristics of electromagnetic waves
Network waves are electromagnetic waves.
A mobile phone has coverage when it receives electromagnetic waves from at least one base station.
They do not necessarily require a material medium for their propagation.
Therefore, we can conclude that electromagnetic waves are those that do not need a material medium to propagate and include, among others, radio, television and telephone waves.
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as a baseball is being caught, its speed goes from 30.0 m/s to 0.0 m/s in about 0.0050 seconds. the mass of the baseball is 0.145 kg. what is the baseballs' accelerations? what are the magnitude and direction of the force acting on it? what is the magnitude and direction of the force acting ont he player who caught it?
The weight, drag, and lift are the forces. Actually, lift and drag are two parts of a single aerodynamic force that acts on the ball. Lift acts perpendicular to the motion, while drag occurs in the opposite direction.
What forces are at work when a ball is launched?
Therefore, the drag force, which is essentially air resistance, slows the ball as it moves ahead, the Magnus Force, which curves the ball away from its primary flight path based on its spin, and the gravity force all act on any thrown ball.
How does the gravitational pull affect baseball movement?
The ball moves downhill due to gravity, drag, and the Magnus force. That depends on the pitch, I suppose. The Magnus effect creates a force perpendicular to the motion of the ball in the direction of the spin as it spins in its flight path as pressure fluctuations build on it.
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The acceleration of the baseball is found to be 6000m/s².
(final velocity - starting velocity) / time elapsed = acceleration = a
a = (0-30)/.005 = -6000 m/s2 (negative sign suggests the ball is slowing down) (negative sign means the ball is slowing down)
we know, from the second law of newton, the average force on the ball will be,
Force = F = mass x acceleration = ma
F = (0.145 kg)(6000 m/s2) = 870 N distant from the ball thrower
The amount of the force on the catching player is the same, 870N. The mitt exerts an equal and opposing force on the ball (Newton's Third Law of Motion).
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What would happen if an igneous rock was first exposed to energy from the Earth's interior and then millions of years later to energy from the sun?
If igneous rocks are exposed to energy from the Earth's interior and then millions of years later to energy from the Sun then they form metamorphic rocks.
What are Metamorphic rocks?Metamorphic rocks are formed if igneous rock is exposed to the energy of the Sun as well as the Earth's interior for millions of years.
If igneous rock was first exposed to energy from the sun and for millions of years to energy from the Earth's interior then the igneous rock will change into metamorphic rocks because metamorphic rocks are formed when igneous rocks are exposed to intense heat energy and pressure.
The intense heat energy and pressure change the shape and form of the rocks and igneous rock will change into metamorphic rocks.
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