Identify the unit of mass. A) centigrams B) kiloseconds C) meters D) milliliters

A stone is thrown straight downward with a speed of 20 m/s from the top of a tall building. If the stone strikes the ground 3.0 seconds later, about how tall is the building? A) 45m B) 60m (wrong) C) 90m D) 105 m

1. It takes 120 minutes for a man to ride his bicycle up the road to Alpe d'Huez in France. The vertical height of the climb is 1,120 m, and the combined mass of the rider and bicycle is 96 kg. What is the bicyclist's average power output, in W? 2.

9 the only force acting on a 2.0 kg canister that is moving in an xy plane has a magnitude of 5.0 n. the canister initially has a velocity of 4.0 m/s in the positive x direction and some time later has a velocity of 6.

José is pinned against the walls of the Rotor, a ride with a radius of 3.00 meters that spins so fast that the floor can be removed without the riders falling. When the ride accelerates to a speed of 17.0 m/s, his angular momentum is 3570 kg m2/s.

Why did rutherford conclude that an atom nucleus has a positive charge instead of a negative charge?

Which statements are true? A. Science is a collection of facts that does not evolve. We have gained all the knowledge we can from science. B. Scientists observe natural events occurring around them.

How many types of quarks are there and what is the name of one of them

A windmill produces 1400 watts of electric power that is used to heat water. The efficiency is 100%. How long will it take to raise the temperature of 40 gallons of water by 50∘F?

What is a chemical energy

Multiple sound waves reflections in a room are called?