You get 750 j of work out of a machine that you put 6,000 j of work into. What is the efficiency?

Numbers may be entered in several formats - including scientific notation and numerical expressions. WebAssign uses standard scientific or "e" notation for "times 10 raised to the power." For example, 1e3 is the scientific notation for 1000.

How would the path of the ball differ on Earth than on the moon?

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.

Only about 36% of the energy from petrol is used to move a car. What happens to the rest of it?

Since Earth is attracted to the sun, why doesn't it fall into the sun? A. Because it has too much mass to move toward the sun B. Because it has sufficient tangential velocity C. Because there is an equal force holding it away from the sun D.

What might a psychodynamic theorist think about a person with extreme shyness?

Determine the magnitude of the acceleration for the speeding up phase.

A battery is used to?

A person riding on the roof of a freight train throws a ball forward. (a) If we ignore air drag and relative to the ground, is the ball moving faster or slower when the train is moving than when it is standing still?

Lemonade powder is stirred into water until it dissolves. Which are true statements? Check all that apply. A. Lemonade is the solute. B. Water is the solvent. C. Lemonade is the solvent. D. Water is the solute.