It takes 63 W to power a ceiling fan. The energy output of the fan is 50 W. Calculate the efficiency of the fan. Round your answer to the nearest percentage. %

An object of the same mass has three different weights at different times. Which statement is possible?

The change in electric potential energy per unit charge is

1) Alchohol, a commonly used psychoactive drug, is a Select one: A. depressant B. stimulant x C. opiate D. hallucinogen 2) in a party, a friend invited Letia to try taking a drug. She told Letia, "This is great stuff.

A cetain car weighs 25,000 N. Calculate the mass of the car. 245.000 kg 25,000 kg 9.81 m/s2 2,500 kg

What type of energy transfer occurs when: warm ocean water carries heat from the equator toward the poles A - Radiation B - Convection C - Conduction

The boy moving down the hill posses what energy?

In what ways does a river carry its load?

What is a unit of mass?

Which is not an era of the Phanerozoic eon

Newton's third law states that when an object exerts a force on another object, the second object exerts an equal but opposite force on the first object. Which of the following shows an example of this? a.