What does a photovoltaic cell do?

converts electricity into heat for pools

uses pumps and the sun’s energy to heat buildings

collects the sun’s energy for heating pools

converts the sun’s energy into electricity

Arock collection comes from which part of earth?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?