Through which substance will sound travel fastest?

the ground

the ocean

the air

Vx = 20 m/s, vy = 43 m/s. Find the vector's magnitude.

What is Albert Einstein's contribution to the understanding of nuclear energy? He proposed that matter can be converted to energy and vice versa. He first discovered that nuclear-reaction products are lighter than the reactants.

A car travels 30.0 km to the south and then turns around and travels 20.0 km to the north in 1.5 hours time. What is the car's total displacement? What is the car's average velocity?

Bradley was working in the lab. He accidentally poured a container of concentrated hydrochloric acid into his container of distilled water. Not thinking much of it, he continued with his work as if nothing happened.

How does the size of engine affect the speed of a car?

What is the kinetic energy of a 1,900 kg car moving at 89 km/h?

Why do we study black holes

Calculate the kinetic energy of a charging elephant if its mass is 5,000kg and it moves at 8m/s

Why is a decrease in Earth's ozone harmful to life?

What force does a window washer want acting on him when trying to keep the same position