Diffrences between weak nuclear force and electromagnetic force

An uncharged metal sphere, A, is on an insulating base. A second sphere, B, of the same size, shape, and material carrying charge Q is brought close to, but not touching, sphere A.

Explain fully, in your own words, why the temperature during PCR goes through cycles of 94C, 50C, 72C.

When a rifle fires, a sequence of events takes place. After the firing pin strikes the primer, what is the next event in the sequence? Expanding gas drives the bullet through the barrel. Gunpowder burns and converts to a gas. The trigger is pulled.

The force that pulls planets torwards the sun is called

A 2-ft-high and 5-ft-wide rectangular plate is submerged vertically in the water so that the top is 1 ft below the surface. Express the hydrostatic force against one side of the plate as an integral.

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. (a) What impulse is imparted by this force?

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?

What happens to the force of gravitational attraction if the distance between two objects increase?