Which device uses AC current to operate?

A. locomotive train

B. desktop computer

C. car

D. portable media player

E. flashlight

A circuit is used in which process? A electricity B magnetism C velocity D gravity

If you hit the brakes of your bicycle does it still mean you're accelerating

Which part of the heating curve corresponds with the heating of liquid water?

Differentiate between a scientific theory and a scientific law.

You are at a railroad crossing waiting for a freight train traveling at a speed of 22.8 m/s to pass by. The frequency of the train's horn is 325 Hz. (Use 343 m/s as the speed of sound.

I need to learn some interesting facts, any smart people out here?

The planet Pluto has 1/500 the mass and 1/15 the radius of Earth. What is the value of g on the surface of Pluto? (A) 0.3 m/s2 (B) 1.6 m/s2 (C) 2.4 m/s2 (D) 4.5 m/s2 (E) 7.1 m/s2

A ball is dropped from the top of a building. TEL When does the ball have the least kinetic energy? RE O just before it hits the ground - O just after it is released O half way through the fall O after it has hit the ground

Which one of the following does not accurately describe the universal gravitational law? (a) gravitational forces is proportional to the product of the two masses.

Sound with frequency 1300 Hz leaves a room through a doorway with a width of 1.03 m. At what minimum angle relative to the centerline perpendicular to the doorway will someone outside the room hear no sound