To How does the connection between electricity and magnetism allow you to make
a motor out of a coil and a magnet? How do induced currents allow you
make a generator out of a coil and a magnet?

What is the measurement of how fast an object moves relative to a reference point?

Explain what will happen if decomposers were apsent from a forest ecoysystem.

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.