The North American and European plates of the

Earth's crust are drifting apart with a relative speed of

about 25 mm/yr. Take the speed as constant and find when

the rift between them started to open, to reach a current

width of 2.9 x 10^3 mi.

A motorcycle starts from rest and has a constant acceleration. In a time interval t, it undergoes a displacement x and attains a final velocity v. then t is increased so that the displacement is 3x. What final velocity does the motorcycle attain?

You have a 1.55 kg block of silver at room temperature of 20 °C. Silver melts at 962°C. How much heat energy would be needed to just melt the silver? (Hf (silver) = 111 kJ/kg). Show all work. Answer:

The comparison of work output to work input is called the mechanical. advantage ... a. true. b. false

Satellite A orbits the earth at a height 3.00 times the earth's radius. Satellite B orbits the earth at a height 2.00 times the earth's radius.

A girl throws a stone from a bridge. Consider the following ways she might throw the stone. The speed of the stone as it leaves her hand is the same in each case, and air resistance is negligible. Case A: Thrown straight up.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the

Students will explain, distinguish the difference between the 4 states of matter

Name one way that a mixture can be separated