Why there is a difference between 'actual' mechanical advantage and 'ideal' mechanical advantage.

How does the movement of electrons create an electric charge?

Do heavier objects fall slower than lighter things?

The energy that produces ocean waves comes from a. the rise and fall of the tides. b. rivers flowing into the ocean. c. wind blowing across the water s surface. d. rock falling into the ocean along the shore.

8. A boy pulls a 20.0-kg box with a 140-N force at 30° above a horizontal surface. If the coefficient of kinetic friction between the box and the horizontal surface is 0.25 and the box is pulled a distance of 28.

1. How does potential energy differ from kinetic energy?

Who are the launched dog on moon A. mark B. lyca C. mcmc D. seul

The excerpt is from an article that Roberto read for science class called "Using the Scientific Method to Study Tomatoes." The student performed an experiment to test his hypothesis about sunlight and plant height using two plants.

Does coffee contain corn? What other food in cafes are corn? Fun fact: Almost all our food comes from corn. Corn wipe out most farmers, and corn is our mainly food. We eat it everyday.

When the amplitude of a wave triples, the intensity changes by a factor of [blank] (1/3,1/9,3,9) When the amplitude of a wave is cut in half, the intensity changes by a factor of [blank] (1/4,1/2,2,4) When the distance between the source and your

The rate at which light energy is radiated from a source is measured in which of the following units? A. Lumen B. Candela C. Lux D. Angstrom