How do electric motors create movement?

A. by harnessing gravitational potential energy

B. by using electrically-produced magnetic fields

C. by electric current through turbine blades

D. by spinning magnets to induce electric current

A block of mass m = 1.5 kg is released from rest at a height of H = 0.81 m on a curved frictionless ramp. At the foot of the ramp is a spring whose spring constant is k = 250.0 N/m. What is the maximum compression of the spring, x?

If a person consumes an extra 500 calories per day, how long would it take before he or she gained one pound of fat? A. 10 days B. 14 days C. 7 days D. 5 days Mark for review (Will be highlighted on the review page)

The state at which one objects distance from another object is changing

What is the magnitude (in Newtons) of the force a 796-uC charge exerts on a 481-nC charge 23.1-cm away? 2 pts Question 5 A proton is released in a uniform electric field, and it experiences an electric force of 6.9x10-15-N toward the south.

Non-living factors in an ecosystem are biotic abiotic antibiotic

Describe the relationship between force and mass when the acceleration of two objects remain constant

It is epistemically possible that a completed physics might include which of the following propositions? O Souls and other spiritual substances exist O God created the universe O Matter is unreal O All of the above

The weight of an object varies inversely with the second power of the distance from the center of Earth. The radius of Earth is approximately 4000 miles.

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C