Almost all of the electricity that people use is

produced by

1. motors.

2. batteries.

3. transformers.

4. generators.

1.) Which of the following would be considered an ecosystem? A.) A cat chasing get after a mouse B.) A desert of rocks, sand, hawks, snakes, and scorpions C.) The human body D.) The tree in which a squirrel lives

Two laptop computers each have a mass of 2 kg. If they are 0.5 m apart on a desk, what is the gravitational force between them? G = 6.67 * 10-11 N⋅ (m/kg) 2

The function of a capacitor in an electric circuit is to? A. allow current flow between its plates. B. increase circuit power. C. measure the amount of current in the circuit. D. store electric charges

How can wind erosion directly affect human activities?

Based on how stars are named, which star is probably brightest

The puzzle box is traditionally associated with the work of

A 0.95-kg sample of water at 11°C is in a calorimeter. You drop a piece of steel with a mass of 0.39 kg at 212°C into it.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.

justin pushes basket of toys with 50N of force for 3 meters in 100 seconds. how much work did he do on the basket

In general, what can be said about metals.