Why does a rock weigh less in water than it does on land?

What causes some objects' motion to change?

3. A rectangular coil of wire (a = 21.0 cm, b = 45.0 cm) containing a single turn is placed in a uniform 7.80 T magnetic field, as the drawing shows. The current in the loop is 18.0 A.

A hang glider moves through the air. Does the hang glider have energy? A) Yes because the hang glider is decelerating B) no because the hang glider has no motor C) yes because the hang glider is moving D) no because the hang glider is moving toward

The purpose of the control group is to

Formulate and write a computer program to determine the effects of pressure ratio, minimum/maximum temperature ratio, compressor efficiency, and turbine efficiency on overall cycle efficiency, net-work output per unit mass, and back-work ratio of an

A 16.0 kg canoe moving to the left at 12.5 m/s makes an elastic head-on collision with a 14.0 kg raft moving to the right at 16.0 m/s. After the collision, the raft moves to the left at 14.4 m/s. Disregard any effects of the water.

How many significant figures does the number 91010.0 have?

Convert 9.75 millimeters to centimeters.

A 4357 kg roller coaster car starts from rest at the top of a 36.5 m high track. determine the speed of the car at the top of a loop that is 10.8 m high

A person runs at a speed of 4 meters per second. How far will the person travel in 40 seconds?