PHYSICS MIDDLE SCHOOL

Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the substance slow down.

Answers

Answer 1
Answer:

Explanation:

The particles in a substance slow down when the average kinetic energy of the particles decreases. As the average kinetic energy decreases, the internal energy decreases, and so the thermal energy decreases. As the thermal energy of the substance decreases, the temperature decreases.  
Answer 2
Answer:

Answer:

Sample Response: The particles in a substance slow down when the average kinetic energy of the particles decreases. As the average kinetic energy decreases, the internal energy decreases, and so the thermal energy decreases. As the thermal energy of the substance decreases, the temperature decreases.

Explanation:

edge answer

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I'm not sure about these 2 questions

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2) Newton's third law: For every action, there is an equal and opposite reaction.

3) Please provide the diagram 

Use free fall in a sentance

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Free fall means rapid fall or a downward motion due to gravity. Sentence example: When Joe was accidentally bumped by Sarah, he was sent towards a free fall down the escalator, leading to a serious injury on his arm and two legs.
the jumpers were required to free fall for 8 second

How was the speed of light determined

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Answer:

Speed of light = 3 * 10 ^8 m / s. Speed is related to the distance and time and so its unit is in meters and seconds. The speed of light value mentioned above is the value calculated in vacuum or air with the help of lasers.

But when it comes to water, refractive index has to be taken into account.The speed of light is faster in vacuum than other mediums.
Presently, the speed of light in a vacuum is defined to be exactly 299,792,458 m/s (approximately 186,282 miles per second). . An early experiment to measure the speed of light was conducted by Ole Romer, a Danish physicist, in 1676. Using a telescope, Ole observed the motions of Jupiter and one of its moons, Io

Please help me on this I know it’s not B this stuff is kinda hard for me

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There you go again.  Newton's 3rd Law says "for every action there is an EQUAL OPPOSITE reaction.".

EQUALand OPPOSITE

If THIS MUCH force pushes the bullet THAT way, then THE SAME amount of force pushes the rifle THIS way.

The bullet pushes backward on the rifle with the same amount of force as the rifle exerts on the bullet.

I don't know what calculation to use, can someone help me?

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Write 3,150,000 j = 4000 j / kg-C then work with your units. Divide each side by 'j', then write '25' in place of 'kg', and you'll have an equation with only 'C' and numbers in it. Solve that equation for 'C'.

Carmen is heating some water and trying to measure the temperature of water using a Celsius thermometer. Which measurement can she expect once the water begins to boil?32°C
100° C
212°C
373°C

Answers

100° Cshe can expect once the water begins to boil.

Option: B

Explanation:

The boiling point for water at 1 pressure atmosphere of sea level is 212 ° F or 100 ° C. That value isn't a fixed. Water's boiling point is dependent on the ambient pressure, which varies based on elevation. At a lower temperature, water boils as one gains altitude like getting higher on a hill, and boils at a higher temperature if one increases the atmospheric pressure of returning to or below sea level.

It also relies upon the water's purity. Water containing contaminants like salted water boils at a level higher than pure water. This effect is called acceleration of the boiling point and is one of the material's colligative features.

Answer:

option b) 100°

Explanation:
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