How much gold (Au) is extracted per ton of rock ore

What does a mechanical advantage less then one mean? What is gained?

Which of the following statements concerning the nuclear force is false? O The nuclear force is attractive and not repulsive. O The nuclear is one of only four known types of forces in nature. O The nuclear force is very short-ranged.

Can the dielectric permittivity of an insulator be negative?

When connected to a 120 V outlet, a light bulb consumed a power of 50.4 watts. What is the current flowing through it?

Fifteen joules of heat are added to a cylinder with a piston. The system uses 7 joules of energy to raise the piston upward. By how much did the internal energy of the system increase?

What is the momentum of a 0.145 kg baseball traveling at 40.0 m/s

To analyze the motion of a body that is traveling along a curved path, to determine the body's acceleration, velocity, and position. A motorcyclist travels around a curved path that has a radius of 250 ft.

You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of reference he has a speed of 3 m/s to the south.

Imagine you are holding an apple. Does this apple have energy? how do you know?

Explain how inertia and the shape of a loop counteract the force of gravity to keep riders from falling out when a roller coaster goes through a loop traveling upside down