Which does not affect the strength of an electromagnet?

the length of the nail.

Explanation:

The main factors that affect the strength of an electromagnet are: Number of turns on the coil of wire around the core. Strength of the current applied. The material of the coil. As to where the length of the iron core will not effect the strength, it will still work the same.

3.2x10^7

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.