The frequency of a periodic signal is 20 MHz, state it's period?

Bradley was working in the lab. He accidentally poured a container of concentrated hydrochloric acid into his container of distilled water. Not thinking much of it, he continued with his work as if nothing happened.

Find the acceleration of an 800-kg car that has a net force of 4,000 N acting upon it.

At a boundary, plates move away from each other as magma pushes them from below. When this change happens beneath the ocean floor, it results in.

N the equation z = ct + d, z is measured in meters and t is measured in seconds. what are the dimensions (units) of d?

A rotating turbine generates electricity to power a blow dryer what is the energy transformation

A skater wearing in - line skates (no friction) is standing in the middle of the aisle inside a bus and is not holding on to anything.

A group of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y=ax2 about the y-axis.

The movement of thermal energy from hot to cold materials is called

An object initially at rest explodes in two fragments of masses 5 kg and 7.5 kg that move in diametrically opposite directions. If the speed of the first fragment is 8.1 m/s, find the internal energy of the explosion.

Blank the constant velocity of a falling object when the force of air resistance is equal to the force of gravity