- Chemical, potential energy is stored in a battery.
- The negative end of a battery is connected to a wire.
- The wire loops numerous times around an iron nail.
- The wire returns to the positive end of the battery.
What happens to the nail?

A) It gains a negative charge.
B) It gains a positive charge.
C) It repels other iron items, such as paperclips.
D) It attracts other iron items, such as paperclips.

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0

Compare the patterns of the two waves shown in the image. which statement is true about these waves?