An experiment is designed to see if the shells of sea snails are weakened by exposure to sea water which is more acidic than normal. Shells are placed in normal sea water, sea water that is more acidic than normal, and sea water that is more basic than normal.

The shells are checked every day at 8 AM. Which of the following is the dependent variable for this experiment?

exposure to sea water that is more acidic than normal
exposure to sea water that is more basic than normal
time
the strength of the shell

the amount of current in the coil

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.

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.