You did 150 joules of work lifting a 75 newton backpack. How high did you life the backpack?

If you were trying to kill a fish with a laser beam, would you aim where you see the fish?

Energy is required to move a 657 kg mass from the Earth's surface to an altitude 2.97 times the Earth's radius RE. What amount of energy is required to accomplish this move? The acceleration of gravity near the Earth is9.

The greatest ocean depths on the earth are found in the marianas trench near the philippines, where the depth of the bottom of the trench is about 11.0 km. calculate the pressure due to the ocean at a depth of 9.

State three effects a force can have on an object

How is the ideal mechanical advantage of a wheel and axle calculated?

What is the mass in kg of a leopard in a tree if the tree branch is 36 m up and the leopard's gravitational potential energy is 29988 J?

Venus's average distance from the sun is 0.72 AU and Saturn's is 9.54 AU. Calculate the orbital velocity of Venus and Saturn around the sun. (The mass of the sun is 1.99 X 10^30 KG. an AU is 1.50 X 10^11 M.

Caleb's parent drove him to a swim meet 208 km away. It took them 2 hours, which included a 15-minute break to refuel. What was their average driving speed?

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Why do different elements emit different colors of light