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givi [52]
3 years ago
5

A train travels 92 miles in 11 1/2 hours. what is its average speed in miles per hour?

Physics
1 answer:
Gnom [1K]3 years ago
5 0
The answer is 8 mph.
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What is latent heat? Group of answer choices Energy released when water evaporates. Energy hidden in water vapor in the air. Ene
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Answer:

Energy absorbed or hidden when water evaporates

Explanation:

The heat that is required to make a phase change is known as latent heat.

A phase change occurs when matter changes state. For example from solid to liquid, from liquid to gas, among others.

When changing from liquid to gas (for example when water evaporates), the heat necessary for this to happen is called latent heat of vaporization. The word latent means hidden, because a change in temperature is not perceived during the phase change, even when heat is being added, thus it is said that the heat is hidden or latent.

So the answer is:

  • Energy absorbed or hidden when water evaporates.

*Another type of latent heat is the latent heat of fusion, which is when a solid becomes liquid.

7 0
3 years ago
If two runners take the same amount of time to run a mile, they have the same __________.
Svet_ta [14]
I am going to say velocity because you have the same amount of acceleration going in a certain direction.
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The transfer of energy between two objects by electromagnetic waves is called
gizmo_the_mogwai [7]
The answer your looking for is conduction.
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3 years ago
30N of force is used to raise a box that weight 60N up an incline plane. What is the mechanical advantage of the incline plane?
Sati [7]
To calculate MA = force needed/force used
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MA = 60/30 = 2
The mechanical advantage is 2
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5. Which pair of words, in order, correctly completes
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B is an answer.

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