12250 J
<em>elastic potential energy = 0.5 × spring constant × (extension)2</em>
spring constant = 500
extension = 7cm
7^2=49
0.5 × 500 × 49 = 12250 J or 12.25kJ
Answer:
The second one a part of it heats up Earth's land and water equally.
Explanation:
Hope this help!!!
Explanation: This Law of Superposition is fundamental to the interpretation of Earth history, because at any one location it indicates the relative ages of rock layers and the fossils in them.
3.60m/s
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