When combing your hair, you scuff electrons from your hair onto the comb. is your hair then positively or negatively charged? how about the comb?

The distance from the sun to earth is 1.496 * 108 km. how long does it take light to travel from the sun to earth?

The ratio of output power to input power, in percent, is called

If there was no frictional force acting on the ball in question 2 what would happen to the player? Use inertia and Newton's 1st law to explain in complete sentences

Keplers work revealed that the sun was

Describe the difference between the current from a battery in the current from electric socket.

The equation e = mc2 relates mass and a. energy b. force c. work d. gravity

What should a scientist do to use scientific methods for determining the relative age of Earth's rocks? A be biased in opinion B disregard views of others C use creative ideas D prove that methods are non-testable

If a sample of gas is heated at a constant pressure what will happen to the volume of the gas

1. What is the speed of sound in air that has a temperature of 90.0 °C?

What effect does a doubling of the mass have upon the acceleration of the object? Be quantitative.