A parent pulls a child in a wagon at a constant speed. If the parent pulls with a force of 16N for 12 m and the handle is inclined at 25 degrees above the horizontal how much work does the parent do on the wagon?

How does the gravitational force between two objects change if the distance between the objects is doubled? A. The gravitational force decreases by half. B. The gravitational force doubles. C. The gravitational force decreases by a factor of 4. D.

The scientific method is? (apex) A. The method used to review conclusions B. How scientists come up with ideas C. The procedure scientists use to gain knowledge about the physical universe D. The method used by scientists to measure quantities

An 85-kg rock climber, when reaching the summit, built up 250,000 J of gravitational potential energy. How high did the climber go?

A moving freight car collides with an identical one that is at rest what happen to the second car after the collison

The wavelength of the sound is 0.750m. What is the frequency?

A machine does 1,500 joules of work in 30 seconds. What is the power of this machine?

A boy standing on the deck of a bridge sees a motorboat approaching in the water below at a constant rate of speed. When the boat is 27 meters from the bridge, the big drops a stone to the water below. If the stone strikes the water 3.

Which object has a varying speed? A. a bird flying 10 m/s for 10 seconds B. a car slowing from 60 m/s for 10 seconds C. a fish moving at 2 m/s for 5 minutes D. a car traveling the speed limit

Most of the energy used by light on earth comes from

If a psychologist were to run an experiment measuring the effects of temperature on aggression the differing temperature would be considered the A. dependent variable. B. experimental variable. C. independent variable. D. random assignmen