Definition of heat in own words

A sample contains 36g of a radioactive isotope. how much radioactive isotope remains in the sample after 3 half-lives

It takes 100,832 J of work to lift an elevator 18.3 meters. If this is done in 21.0 seconds, what is the average power of the elevator during the process?

When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. In one such accident, a 1750kg car traveling to the right at 1.

Three ways to accelerate an object?

Which of the following statements is false? A. Two or more atoms combine chemically to form a molecule. B. Two or more different substances combine physically to form a mixture. C. Two or more different atoms combine chemically to form an element. D.

1. What's your great idea for capturing carbon emissions from existing power plants today?

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?

A container of gas is at a pressure of 3.7 * 105 Pa How much work is done by the gas if its volume expands by 1.6 m3?

A person carries a mass of 10 kg and walks along the + x-axis for a distance of 100m with a constant velocity of 2 m/s. What is the work done by this person? A) 20 J B) None of the other choices is correct. C) 0 J D) 200 J

Uranus has more than 14 times as much mass as earth, yet the gravitational force is less. how can that be?