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- Find the energy of a photon with a wavelength of 3 metres.
- Find the energy of an electron traveling at one third the speed of light in a vacuum.
- You drop a ball from 1 metre off of the ground. The ball has an no initial velocity. Neglect air resistance and decrease from surface gravity. Calculate the velocity of the ball when it hits the ground.
- You drop a ball from 1 kilometre off the ground. Do not neglect air resistance or decrease from surface gravity. Do neglect the possibility of the ball burning up. Calculate the velocity of the ball when it hits the ground.
- You drop a ball made of solid natural rubber with radius 10 centimetres from 3×104 metres above the earth’s surface. It begins it’s descent with 0 velocity or heat relative to earth. Don’t ask how its at absolute 0. After how many seconds will the ball be entirely in a gaseous state? Consider the decrease in gravity and thickness of the atmosphere.