In an electric circuit it must be what or there will be no flow of electricity?

The average speed of a runner in a 400 meter race was 8.0 meters per second how long did it take the runner to complete the race

If a business was made up of ten large pickup trucks and the workers had to back them under a machine lifting bails of hay to be lowered into the truck bed, which simple machine would be best for the job?

The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas.

Alana is skateboarding at 19 km/h and throws a tennis ball at 11 km/h to her friend Oliver who is behind her leaning against a wall.

What will happen to the absorption and/or emission spectral lines of an object moving away from Earth at high speed? a. They will be shifted toward the blue end of the spectrum. b. They will be made more intense. c.

Sound waves, water waves, and light waves are all alike in that they all

What is the process in which a nucleus of an atom breaks up, emitting subatomic particles and/or energy?

If the number of particles of a gas is increased, the gas pressure will do what?

1. The sun and other stars produce visible light by a. fluorescence. b. luminescence. c. incandescence. d. electroluminescence.

What are gravitons?