a 2.5 kg copper block of mass at 500 degrees celsius is placed on a large block of ice. given that the specific heat capacity of copper is 390 j/kg and the latent heat of ice is 335000 j/kg, what is the maximum amount of ice that can melt?

Muscle strength is measured by estimating a person's one repetition maximum (1RM).

1RM is a measurement of the greatest load (in kilograms) that one can move means it can be lifted, pushed, or pulled once without failure or injury.

1RM is calculated by counting the maximum number of exercises that you can do in repetition by the use of a load that is just less than the maximum amount that can be moved. This number is known as the repetitions to fatigue (RTF) – you are required to stop counting the repetitions when you feel you can no longer do the exercise in a proper way or when you slow down or can't keep a steady pace.

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A student walks on a treadmill belt moving at 4.0 m/s and remains at the same place in the gym. 4 m/sec is the student's speed relative to the treadmill.

Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, velocity is a vector, whereas speed is a scalar number.

On a treadmill, the student is reportedly travelling at a speed of 4 meters per second. There is no difference in displacement between the student and the treadmill when viewed as an entire machine.

However, if we simply look at the treadmill belt and the student, we might argue that the student is travelling 4 meters per second in relation to the treadmill belt, or the opposite. The student's pace is 4 meters per second slower than the treadmill in this instance.

So, 4 m/sec is the student's speed relative to the treadmill.

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If 2.0 kg of steam at 100 o C and 10.0 kilogram of ice at 0 o C are combined, the resulting mixture will be hotter than 50 degrees. In its gaseous state, water is steam.

This might happen as a result of boiling or evaporation, where heat is provided until the water achieves the enthalpy of vaporization. Although wet steam, the visible mist or aerosol of water droplets created as water vapour condenses, is sometimes referred to as "steam," saturated or superheated steam is invisible. The concept of temperature is used to convey quantitatively how hot and cold something is. Using a thermometer, one can gauge temperature. Thermometers are calibrated using a variety of temperature scales, which historically drew on a variety of reference points and thermometric substances.

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Answer:

The boat moves away from the dock, he won't be able to grab the line

Explanation:

When he jumps, he applies a force to the boat and the boat exerts a force equal in magnitude and opposite in direction to the force he applied.  Because the friction is very low between the bottom of the boat and the water, the boat moves away from the dock.  He won't be able to lean over and grab the line.  This is Newton's 3rd Law of Motion.

If the elevator is stopped, the scale reads what you would expect it to read, your weight in an elevator. There elevator is in equilibrium.

If you are on an elevator (on Earth), your mass is constant. However, if the elevator is moving (and you're on a scale), you'll notice that your weight changes depending on where the elevator is moving. The only possible factor that can explain this change is the acceleration of the object - you

When the elevator is moving, we will weigh our normal weight. Since we are already moving at the same speed as the elevator (up or down), nothing is affecting us to change our weight. However, when the elevator starts to go or stops, our body resists it.

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The magnetic field's magnitude is.

What exactly is magnetic flux?

Magnetic flux is a measurement of the intensity of a magnetic field as it passes through a certain surface. It is defined as the product of the surface area and the magnetic field component perpendicular to the surface. This may be stated mathematically as:

Φ = B * A * cosθ

Where is the magnetic flux, B is the magnetic field magnitude, A is the surface area, and is the angle formed by the magnetic field and the surface normal.

The International System of Units, i.e., the SI unit of magnetic flux, is commonly measured in webers (Wb). In a single-turn circuit, one weber is equal to the flux that creates an electromotive force of one volt.

Depending on the issue:

The magnetic flux across a surface is defined as the product of the surface area, the magnetic field component perpendicular to the surface, and the cosine of the angle between the magnetic field and the surface normal. This may be stated mathematically as follows:

Φ = B * A * cosθ

Where is the magnetic flux, B is the magnitude of the magnetic field, A is the surface area, and is the angle between the magnetic field and the surface normal.

In this situation, the surface area is 3 square cm, and the magnetic flux is 0.9 mwb. Use the following values to calculate the magnitude of the magnetic field:

As a result, the magnetic field magnitude is 0.34 mwb/cm^2.

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For a positive moving charge, the magnetic field is linear. If the charge travelling had been a negative charge, the magnetic field lines would have been oriented in the opposite way.

The magnetic field is also inversely proportional to the velocity of the travelling charge, or B v B v. (in this case the magnetic field is directly proportional to the speed). As a general rule, to determine the direction of the magnetic force acting on a negatively charged particle, first determine the force's direction acting on the positive charge, then reverse that direction to determine the force's direction acting on the matching positive charge. Therefore, in this issue, the force is pointed in the direction of the left. The right hand rule can be used to determine the direction of the magnetic force.

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537N thermal energy is created by friction during his descent.

The friction-related work is converted into thermal energy.

If Justin is initially at rest, MGH is his potential energy.

Thus, we have 30* 9.8*8 = 2352N.

Where,

Mass = m

Gravitational acceleration = g

Height = h

His potential energy is changed into usable kinetic energy when he reaches the bottom of the slide, leaving us with 1/2 mv^2.

Finally, we arrive to 1/2 * 30 * (11)^2 = 1815N

He had 2352N at the outset, and 1815N at the conclusion.

The thermal energy is therefore 2352 - 1815 = 537N.

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With a plane mirror, the distance of the image behind the mirror is infinitely far. The greatest distance behind the mirror at which the image can be found is infinite.

For plane mirrors, the object distance is equal to the image distance and hence, the image is the same distance behind the mirror as the object is in front of the mirror.

The image distance from mirror does not depend on the distance of the observer from mirror. Therefore, if we change the object's distance then only the image distance or distance between object and image will be affected.

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Time taken to get to the resturant with constant speed of 3.4 m/s is 294.2 seconds.

All the three are important concepts of motion and physics.

Speed = Distance/Time – Refers to how slow or fast an object moves. It describes the distance travelled divided by the time taken to cover the distance. Speed is directly Proportional to Distance and Inversely proportional to Time.

Distance is the length between two points.

We know that

speed,s = distance/ time

thus time,t = distance/speed

Here  d = 1000m; s = 3.4m/s

Hence we can say that

t = 1000/3.4 = 294.2 sec

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The difference between the mass of a proton and an electron is 9.99 X 10⁻²⁸ Kg.

Mass of a proton = 1.67 X 10⁻²⁴ g

Mass of an electron = 9.1 X 10⁻²⁸ g

Converting Mass to Kilogram,

Conversion factor: 1kg = 1000 g

Mass of a proton = 1.67 X 10⁻²⁷ g

Mass of an electron = 9.1 X 10⁻³¹ g

Difference in their masses would be,

= Difference = Mass of proton - Mass of electron

= Difference = ( 1.67 X 10⁻²⁷ ) - ( 9.1 X 10⁻³¹ )

= Difference = 9.99 X 10⁻²⁸ Kg

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The  wave peaks will reach the eardrum of a person sitting near that fork in 2 seconds is about 225

The crest is the highest point on the wave. The trough is the area that is the lowest. The wave length, also known as the wavelength, is the separation between two successive crests (or troughs), whereas the wave height is the overall vertical change in height between the crest and the trough.

in Wales, Snowdon (1085m) England's Scafell Pike (978m) Scotland's Ben Nevis (1345m)

The  wave peaks will reach the eardrum of a person sitting near that fork in 2 seconds is about 225

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Answer:

Zero I think I'm not sure

The boat is moving at a speed of 2.0 m/s when crossing the river.

Step 1: Determine the boat's velocity in relation to the river by deducting the river's current from the boat's speed in still water.

Boat speed in relation to the river is equal to 8.0 m/s minus 6.0 m/s, or 2.0 m/s.

In Step 2, multiply the boat's angular velocity to the stream by both the lake's current to determine how fast the sailboat will be traveling across the water.

Boat's river crossing speed is calculated as 2.0 m/s plus 6.0 m/s, which equals 8.0 m/s.

Because of this, the boat is moving at 8.0 m/s as it crosses the river.

An object's mass and the force being exerted towards it both affect how quickly it moves. The speed of an object's movement increases with increasing force. It will travel more slowly the more mass an object has. This is so that the item can be accelerated by the pressure towards the extent that the mass permits.

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The ball's acceleration shortly before it reaches the ground is zero in both magnitude and direction.

The ball's diameter, d, and the amount of time, t, it takes to cross the photogate can both be used to calculate the beginning horizontal velocity. Vo = d/t, then.

A missile moves independently in both the horizontal and vertical directions. Therefore, regardless of their horizontal velocities, two objects subject to gravity who descend from the same height will touch the earth simultaneously.

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The hubble constant is about 70 km/s/mpc. you measure the redshift of four galaxies. the first has a redshift of 1500 km/s, the second has a redshift of 750 km/s, the third has a redshift of 5000 km/s and the fourth has a redshift of 2000 km/s. Andromeda is the closest galaxy.

A galaxy is made up of gravitationally bound clusters of stars, stellar debris, interstellar gas, dust, and dark matter. The word "galaxias" is a Greek word that means "milky" and alludes to the Milky Way galaxy, which is where the Solar System is located. Hubble constant, galaxies range in size from dwarfs, which have less than 100 million stars, to supergiants, which have more than 100 trillion stars. All of these stars orbit the galaxy's center of mass. Galaxies have an average of 100 million stars. Stars and nebulae make up a very small portion of the material of a typical galaxy; dark matter makes up the majority of the galaxy's mass. Typically, galaxy cores contain supermassive black holes. Galaxies can be characterized as elliptical, spiral, or irregular based on their visual shape. [6] Many of them are thought to have supermassive black holes in their cores. The main black hole of the Milky Way.

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The two-neuron chain allows increased communication and control of the effector organ is true.

Preganglionic and postganglionic neurons make up the link in the ANS between the CNS and its effector. Outside of the central nervous system, in an autonomic ganglion, is where these two neurons synapse.

The two-neuromuscular chain enables improved communication and regulates the effector organ. The sympathetic division is where the cell bodies of preganglionic neurons are found.

The brainstem or spinal cord of the central nervous system houses the preganglionic neurons' cell bodies (CNS).

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The magnitude of the gravitational force exerted by ball A on ball B is equal to 36.31 × 10⁻¹¹ N.

Newton’s law of gravitation can be defined as every particle of matter in the universe attracting every other particle with mass with a certain force. The magnitude of gravitational force has a direct relationship with their masses.

Therefore, the gravitational force between two bodies can be written as:

[tex]\displaystyle F =G\frac{M_1M_2}{r^2}[/tex]

Where G denotes the universal gravitational constant.

Given, the mass of the Ball A = Ball B = 7 Kg

The separation between the two balls, r = 3 m

The magnitude of the gravitational force applied by ball A on ball B can be determined as:

[tex]\displaystyle F =6.67 \times 10^{-11} \times \frac{7\times 7}{(3)^2}[/tex]

F = 36.31 × 10⁻¹¹ N

Therefore, the gravitational force is equal to 36.31 × 10⁻¹¹ N.

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When the switch is closed, in the third circuit the resistance would be the highest and the current be the lowest.

From the question, we have

Voltage in the circuit, V = 1.5 volts,

The circuit's resistance, R = 50,

In the third diagram, the bulb is connected in parallel, which means that the voltage in the circuit will remain constant. Additionally, because the current depends on the resistor, the resistance in this circuit will be larger.

Additionally, according to Ohm's law, a high resistance will result in a low current flow.

Since there is only one bulb in the first circuit, resistance will be minimal and current flow will be high.

As a result, the third circuit's resistance would be the highest and its current the lowest when the switch is closed.

Current :

The phrase "electric current" is frequently used to describe how much electricity flows through a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). As more electricity passes through the circuit, the ampere value increases.

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When the switch is closed, in the third circuit the resistance would be the highest and the current be the lowest.

What is current?

When describing how much electricity flows through a circuit and how it flows in an electronic circuit, the term "electric current" is often employed. It is measured in amperes (A). The ampere number rises as more electricity flows through the circuit.

Given:

The Voltage in the circuit, V = 1.5 volts,

The resistance in the circuit, R = 50 Ω,

As you can see in the third diagram, there is a parallel connection of the bulb, so the voltage in the circuit will remain the same and the current depends on the resistor, so there will be higher resistance in this circuit.

And if the resistance is high the current flow will be low, (By Ohm's law)

In the first circuit, there is only one bulb, so resistance will be low, and the current flow will be high.

Therefore, when the switch is closed, in the third circuit the resistance would be the highest and the current be the lowest.

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The current in the circuit of resistance is 1.2 A.

Current is the rate of flow of charge round an electric circuit.

To calculate the current flowing in the circuit, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the current is 1.2 A.

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The strong force, which is thought to hold atoms' nuclei together and is even stronger than the Coulomb force at close ranges, was postulated by physicists as a result of Coulomb's law inside the nuclei of atoms.

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6.626 x [tex]10^{-11}[/tex] m   is the shortest wavelength of these x rays.

Solution:

λ = h c/ΔE

λ = wave length

h = 6.626 x [tex]10^{-34}[/tex]  m² kg /s  = Planck constant

ΔE = 30 keV potential ( 1 keV = 1.6021 x [tex]10^{-16}[/tex] J)

c = velocity of light = 3 x 10⁸ m/s

Put these values in formula,

λ  =    (6.626 x  [tex]10^{-34}[/tex]  m² kg /s x 3 x 10⁸ m/s) / (30 x 1.6021x [tex]10^{-16}[/tex]  J)

   =    6.626 x [tex]10^{-11}[/tex] m

Hence, 6.626 x [tex]10^{-11}[/tex] m   is the shortest wavelength of these x rays.  

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The wavelength of radiation is 1.428 x 10⁻⁶m.

The equation E=hf is called the Planck relation or Planck-Einstein relation. The letter h is named after Planck as Planck's constant. Energy (E) is related to this constant h and the frequency (f) of the electromagnetic wave.

In quantum wave theory, the Planck relation describes the shear wave energy emitted or absorbed as an electron transitions between energy levels within an atom. If the atom contains electrons, the destructive wave interference between the protons and electrons in the nucleus gives rise to destructive waves, resulting in binding energy. This binding energy is the energy of a photon emitted when an electron is captured or moves between states within an atom. Electron vibrations generate transverse waves, and photon energy is based on the frequency of that vibration.

c/y=v

c/v=y

3 x 10⁸/2.10 x 10¹⁴

1.428 x 10⁻⁶m

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The second polarizer's axis is positioned at a 90-degree angle, and the light intensity that passes through it is 0.

The incident light is ordinary light. it is unpolarised

I₁=I₀/2  For the first polarized

I₂=I₁cos²θ          (Second polarization)

 =I₀/2 cos²90°             (θ=90)

 =I₀/2(0)²

 =0

When an area is measured on a plane perpendicular to the direction of energy propagation, it is possible to define the intensity or flux of radiant energy as the power transferred per unit area. Watts per square meter (W/m2) and kg/s3 are the basic units for this system in the SI. The term "intensity" is most usually used to describe electromagnetic or acoustic waves, such as light or radio waves, where the average power transfer over the course of one wave period is taken into account. Any situation where energy is exchanged can be described as having intensity. The amount of kinetic energy that water drops from a garden sprinkler are carrying, for instance, might be calculated.

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Because of friction with seafloor, the bottom of the wave slows down more quickly than the top; yet, the top does not.

A force known as friction opposes the relative motion of two materials or objects. Molecule adhesion, waviness, and deformations are the underlying factors of this resistive force.

When two objects rub against one another, there is a force called friction that prevents either from moving. Friction is the movement of two objects against one another. Friction moves in the opposite direction and opposes motion. The materials the surface are comprised of affect how much friction there is.

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The air around a pool and the water in the pool absorb the same amount of energy from the sun; however, the water requires more energy to increase its temperature than the air does.

Water has a higher specific heat capacity than air, meaning it requires more energy to increase its temperature by the same amount. This is because the molecules in water are more tightly bonded than those in air, so more energy is needed to break these bonds and increase the temperature.

Additionally, water has a higher latent heat of vaporization than air, meaning it requires more energy to evaporate and create steam. Therefore, the air experiences a greater increase in temperature than the water.

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The fluid gage pressure of [tex]1.39 * 10^{5} Pa[/tex] must be maintained in the reservoir.

It is given to us that -

The hydraulic lift has an output diameter = 40 cm = 0.40 m

It can lift cars up to 1800 kg

We have to determine the fluid gage pressure that must be maintained in the reservoir.

We know that, the formula of pressure is given as -

[tex]P = \frac{F}{A}[/tex]  ---- (1)

where,

F = normal force

A = Area

We can see that there is a normal force created as a result of the weight of the cars. So, we can find out the normal force by -

[tex]F = mg[/tex]  ---- (2)

where,

m = mass

g = acceleration due to gravity

Substituting the values in equation (2), we have -

[tex]F = mg\\= > F = 1800 * 9.8\\= > F = 17640 N[/tex] ------ (3)

Now, the area of the lift with an output diameter of 40 cm can be calculated as -

[tex]A = \pi (\frac{d}{2} )^{2}[/tex]  ----- (3)

where,

d = diameter

Substituting the given diameter value in equation (3), we have -

[tex]A = \pi (\frac{d}{2} )^{2}\\= > A= \pi (\frac{0.40}{2} )^{2} \\= > A = \pi (0.20)^{2} \\= > A = 0.1267 m^{2}[/tex]  ----- (4)

Substituting the value of force, F from equation (3) and area, A from equation (4) in equation (1), we have -

[tex]P = \frac{F}{A}\\= > P \frac{17640}{0.1267} \\= > P = 1.39 * 10^{5} Pa[/tex]

Therefore, the fluid gage pressure of [tex]1.39 * 10^{5} Pa[/tex] must be maintained in the reservoir.

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The order of steps through which a particle of gaseous water travel is evaporation, Convection, precipitation and collection.

The gaseous particle of water also called water vapor will first evaporate and goes high into the clouds and follow the process of condensation, after condensation the water will fallback on the land in the form of rain this process is called raining.

When water goes into the high mountain ranges and then collects in water body, this process is called precipitation and collection respectively. Then again water which is in liquid form becomes what a vapour by following the process of convection.

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Wavelength is the property of light is responsible for the different colors.

The length that a periodic wave travels across in order to replicate its shape is known as its wavelength. It is the distance between two successive corresponding wave points of the same phase, such as two neighboring crests, troughs, or zero crossings, and it is a feature of both traveling waves and standing waves, as well as other spatial wave patterns. The spatial frequency is defined as the wavelength's inverse.. Additionally, sinusoidal wave envelopes, modulated waves, and waves created by the interference of several sinusoids are also commonly referred to as having a wavelength.

Wavelength. and frequency are inversely. related, assuming a sinusoidal. wave traveling at a constant. speed

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