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romanna [79]
3 years ago
7

What happens when the molecules in a steel bar absorb energy, and start moving quickly?

Physics
1 answer:
Mademuasel [1]3 years ago
3 0
The atoms break apart
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Answer:

0.66c

Explanation:

Use length contraction equation:

L = L₀ √(1 − (v²/c²))

where L is the contracted length,

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and c is the speed of light.

900 = 1200 √(1 − (v²/c²))

3/4 = √(1 − (v²/c²))

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