Which statement best explains the relationship between the electric force between two charged objects and the distance between them? a. as the distance increases by a factor, the electric force increases by the square of that factor. b. as the distance increases by a factor, the electric force increases by twice that factor. c. as the distance increases by a factor, the electric force decreases by twice that factor. d. as the distance increases by a factor, the electric force decreases by the same factor. e. as the distance increases by a factor, the electric force decreases by the square of that factor

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature