A nail is attracted to a magnet. What does this tell you about the nail?
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A. It is harder than the magnet.
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B. It is a poor thermal conductor.
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C. It contains iron.
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D. It is a good electrical conductor.

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Consider this initial-rate data at a certain temperature for the reaction described by

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²