Which of the following terms describes a machine that converts heat into work?

A. Entropy pump

B. Heat engine

C. Heat pump

D. Entropy engine

A ball is thrown straight up from a bridge at a speed of 11.0 m/s. If it takes 5.5 seconds to hit the water below, what is the velocity just before it hits the water?

A 73.4 kg basketball player accelerates herself upward at 2.25 m/s. How much upward force does she exert? (Hint 1: Don't forget her weight!) (Hint 2: Her force is not the same thing as the Total Force.) (Unit = N)

What kind of mouse is a battery-powered mouse that uses radio waves or bluetooth technology to communicate with a device?

Explain how the earth is round and not flat

Amy has a mass of 50kg, and she is riding a skateboard traveling 10 m/s. what is her momentum?

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions. On average, the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20-m wide and averages 20-m deep.

Name six processes that are often involved in scientific inquiry.

What happens to the ball's velocity while the ball is traveling upwards?

What will happen to this current if a magnet is brought near the cord?

A 2.0 kilogram rifle initially at rest fires a 0.002 kilogram bullet. As the bullet leaves the rifle with a velocity of 500 meters per second, what is the momentum of the rifle - bullet system?