A person uses a lever to lift a barrel. The person applies 175 Newtons of effort force and pushes the end of the lever 0.8 meter. The never exerts 225 newtons of resistance force. It lifts the barrel 0.5 meter. Fine the work output/ work input , and efficiency of the lever

Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. the electric field at a point p, which is 0.50 m from the center of the sphere, is 15,000 n/c and is directed radially outward. what is the maximum magnitude of the electric field due to this sphere

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

The material that keeps its new shape after it is stretched is called?