HELP PLZ Calculate the resistivity of a metal of length 2m at 20°C having the resistance

of 20 ohm and diameter 0.3mm?​

Suppose you use a machine that gives you a mechanical advantage of 2 to achieve an output force of 30newtons what must the input force be

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.

The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. they start at the left end of the court, run back and forth 6 times, then end back at the left end of the court where they began. what distance did they run? what is their displacement?