If the copper is drawn into wire whose diameter is 7.50 mm , how many feet of copper can be obtained from the ingot? the density of copper is 8.94 g/cm3. (assume that the wire is a cylinder whose volume is v=πr2h, where r is its radius and h is its height or length.) express your answer using two significant figures.

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the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.