Acircuit has a voltage drop of 120 v across an 80 resistor that carries a current of 0.75 a. how much power is used by the resistor? use p = vi.

a. 90 w
b. 60 w
c. 9600 w
d. 2 w

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.