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

A. conductivity.

c. work.

B. efficiency.

d. horsepower.

When current increases and resistance remains constant what happens to voltage?

1. A block is pulled to the right at constant velocity by a 20N force acting at 30o above the horizontal. If the coefficient of sliding friction is 0.5, what is the weight of the block? explain briefly?

An organism's scientific name consists of a. its class name and its family name. b. its kingdom name and its phylum name. c. its genus name and its species name. d. its phylum name and its species name.

What happens when the thermal energy of a substance increases? A. The motion of the particles in the substance increases, and the temperature of the substance decreases. B.

If you mixed potassium, neon, and iodine together what would you expect neon to do?

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?