what is the net force on 4-kg falling object that requires 12-N of air resistance what is its acceleration

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Which situation will produce the greatest change of momentum