What is the change in internal energy if 60 J of heat are released from a system and 20 J of work is done on the system Use U = Q - W.

A. - 40 J

B. 40 J

C. - 80 J

D. 80 J

It was a calm and cloudy day in a Utah town located near mountains. Suddenly the clouds grew dark and heavy, and a storm covered the town in a blanket of snow. Explain with details what would cause the weather to change suddenly like this?

If the length of the centrifuge arm is 12 m, what speed is the rider moving when she experiences 10 g's?

A sprain? a. is an injury that can never be healed. b. is the most painful of all athletic injuries. c. can be completely avoided by stretching. d. is a stretch and/or tear of a ligament.

What is astral projection

Why is a raindrop a particularly damaging element to soil

The force on a current-carrying wire is a maximum when the current is moving parallel to a magnetic field. true or false

In 1999, what percentage of 36-month-old toddlers had been toilet trained? 20 percent 40 percent 60 percent 80 percent

Tarzan, in one tree, sights jane in another tree. he grabs the end of a vine with length 20 m that makes an angle of 45â with the vertical, steps off his tree limb, and swings down and then up to jane’s open arms.

Applying the Law of Conservation of Momentum Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision.

Each of the objects above is composed of identical thin sticks of uniformly distributed mass 5.51 kg and length 0.737 m.