8 is <span>The five </span>physical layers<span> are the lithosphere, asthenosphere, mesosphere, outer core, and inner core</span>
10. is lithoshpere
The answer is:
Forces acting on the sled are paired with equal and opposite forces.
The explanation:
About to push you, this means that he doesn't push yet. If the sled is on level ground and no one is pushing it, then forces are equal and opposite.
The gravity force pulls down and the ground pushes up.
This is Newton's third law:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.
This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
We can also see Newton’s third law at work by taking a look at how people move about. Consider a swimmer pushing off from the side of a pool.
Answer: <u><em>C. Steel</em></u>
Explanation: <em><u>When a sound wave travels through a solid body consisting</u></em>
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<em><u>of an elastic material, the velocity of the wave is relatively</u></em>
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<em><u>high. For instance, the velocity of a sound wave traveling</u></em>
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<em><u>through steel (which is almost perfectly elastic) is about</u></em>
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<em><u>5,060 meters per second. On the other hand, the velocity</u></em>
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<em><u>of a sound wave traveling through an inelastic solid is</u></em>
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<em><u>relatively low. So, for example, the velocity of a sound wave</u></em>
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<em><u>traveling through lead (which is inelastic) is approximately</u></em>
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<em><u>1,402 meters per second.</u></em>
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U = 1/2 * k * x²
U = 0.003J
x = 0.0055m
k spring constant
