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Musya8 [376]
3 years ago
13

What happens to a bar of metal when its heated?

Physics
2 answers:
Nookie1986 [14]3 years ago
5 0
Metal expands when heated.
SashulF [63]3 years ago
5 0

Answer:

It gets longer when heated.

Explanation:

If the temperature of a solid is increased, the solid expands. When a solid is cooled, it contracts.

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A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal
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Explanation:

the answer is in the above image

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If you wish to warm 100 kg of water by 20°C for your bath, how much heat is required? (Give your answer in calories and joules.)
taurus [48]
Q = mcθ

Where m = mass of water in kg.
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3 years ago
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3 years ago
A 100 N force is applied to a 500 kg crate resting on frictionless wheels.
Alla [95]

Answer:

<h2>0.2 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{100}{500}  =  \frac{1}{5}  = 0.2 \\

We have the final answer as

<h3>0.2 m/s²</h3>

Hope this helps you

6 0
2 years ago
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