1. A battery supplies 8 amps of current to a circuit at 24 volts. What is the resistance in the circuit?
2. A television uses 120 volts and 2.2 amps. How much power (in watts) does the television use?
3. You see a lightning flash strike the ground and 3.2 seconds later you hear a loud blast of thunder. How far away (in feet) did the lightning hit?
The speed of sound in air is approximately 1100 ft/s.
4. If the speed of a wave is 300 m/s and its frequency is 12 Hz, calculate the wavelength (in meters).
5. Calculate the energy (in joules) needed for 51 watts of power to be used for 60 seconds.