6. Light from the sun reaches the earth in 480 seconds. The speed of light is 300,000,000 m/s.

How far is the earth from the sun?

A man does 500 J of work pushing a car a distance of 2 m. How much force does he apply? Assume there is no friction. A. 250 N B. 1000 N C. 125 N D. 500 N

A (n) 0.5 kg soccer ball approaches a player horizontally with a speed of 10.6 m/s. The player illegally strikes the ball with her hand and causes it to move in the opposite direction with a speed of 19.9 m/s.

What is an Atwood Machine? a. A double pulley system c. A scale for measuring normal force b. A suspended pulley d. A simple lever

Desalination is needed in order to obtain potable water from __. A glaciers B aquifers C lakes D oceans

Which type of energy is released when a nucleus is split apart? O A. Chemical energy O B. Nuclear energy O C. Elastic energy O D. Kinetic energy

Explain the difference between speed and velocity

A traditional unit of length in Japan is the ken (1 ken = 1.97 m). What is the volume of a cylindrical water tank of height 5.67 kens and radius 5.59 kens in (a) cubic kens and (b) cubic meters?

The molecular shape of a biological molecule is important because

Sharece knows that wave peaks and valleys can add and subtract. What would be the net effect if she was able to cross Wave 1 (a large-amplitude wave in a valley phase) with Wave 2 (a wave with slightly smaller amplitude than Wave 2, in a peak phase)

If an astronomer on a planet orbiting a nearby star observed the Sun when Saturn was transiting in front of the Sun, how would the Sun's brightness change? Note that the radius of Saturn is 6*1076*107 m and the radius of the Sun is 7*1087*108 m.