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

A. conductivity.

c. work.

B. efficiency.

d. horsepower.

How far above the earth's surface will the acceleration of gravity be half what it is at the surface?

A scientific law is a statement that describes some aspect of the world. It is based on repeated experimental observations.

Coherence is the property by which two waves with identical wavelengths maintain a constant a. amplitude. c. phase relationship. b. frequency. d. speed.

Use what you know about inertia to explain why you feel pressed back into the seat of a car when it accelerates

A hill that has a 36.1% grade is one that rises 36.1 m vertically for every 100.0 ml of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

Minerals such as sulfur can sometimes be identified by colors, true or false.

How does the number of each type of particle in a sodium ion compare with the number of each type of particle in a sodium atom?

Calculate the work done when a 10 N force pushes against a cart 4.0 m

Which type of light bulb glows when a filament inside it gets hot?