A pay meter in a holiday home supplies electricity at a cost of 12p per kWh and 10kWh would cost £1.20 how long could a 2kW heater be used for after £1.20 is put into the meter slot?

Why do you think the chemical reactions lab we did is typically called a "copper plating lab"? a. Because the acid solution cleaned the pennies and made the copper look shinier. b.

Which of the following statements are true regarding electric generators? Check all that apply. Check all that apply. An electric generator converts mechanical energy into electrical energy.

Two resistors, A and B, are connected in parallel across a 8.0 V battery. The current through B is found to be 3.0 A. When the two resistors are connected in series to the 8.

What is the difference between frequency and speed?

The main factors that affect an area's temperature are prevailing winds and mountains. a. True b. False

Imagine two artificial satellites orbiting earth at the same distance. one satellite has a greater mass then the other one which of the following would be true about there motion? 1.

What is energy? (Not the answer from google search.)

Explain why the friction force between two surfaces increases if the force is pushing the surfaces together increases.

As energy moves in waves through the water, the water moves a. in waves toward shore. c. in the direction of the waves. b. in a small circular movement. d. against the current.

Which of the following values represents an index of refraction of an actual material? A. 0 B. 1 / 4 C. 5 / 4 D. 1 / 2