How much work is done on a 20 newton block that is lifted 10 meters off the ground by a pulley?

How do particles of gases affect one another's motion

An eagle flies from its perch in a tree to the ground to capture it's prey. describe it's energy transformations.

What holds atoms together in a molecule? A: Densiy B: Gravity C: Physical bonds D: Chemical bonds

What is the formula of the compound formed when ammonium ions and phosphate ions combine?

Electrons are much larger than protons and neutrons. True False

Cardiovascular exercise can

Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, but Kathy leaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.1 m/s2 while Kathy maintains an acceleration of 4.

A 0.0010-kg pellet is fired at a speed of 50.0m/s at a motionless 0.35-kg piece of balsa wood. When the pellet hits the wood, it sticks in the wood and they slide off together. With what speed do they slide?

Jim measures the count rate of a sample of americium-241 as 120cpm. Roughly how long would it take for the count rate to fall below 4 cpm. Show your working

Explain and give an example of newtons 3rd law of motion