A 5000-W heater is used to heat water. How long will it take to heat 20 kg of water from 20°C to 100°C? Select one:
O A. 12 minutes
O B. 32 minutes
O C. 40 minutes
O D. 22 minutes
O E. 2 minutes​

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9

Explain how waste energy is produced when an inefficient lightbulb converts electrical energy into radiant energy.

What is the main difference between the formulas for kinetic energy (ke) and gravitational potential energy (pe)? a. ke depends on position and pe depends on motion. b. ke depends on motion and pe depends on position. c. both energies depend on motion, but only ke depends on position. d. both energies depend on position, but only pe depends on motion.