Find the volume of a sphere that has a radius of 2 cm.

8 cm³

12.6 cm³

61.2 cm³

25 cm³

33.5 cm³

And hydroelectric power plants the energy from living water is converted into electric power. What kind of energy transformation occurs when the energy is converted?

A dog has a mass of 20 kg. If the dog is pushed across the ice with a force of 40 N, what is its acceleration?

Which has the highest energy level? a. red waves b. orange waves c. blue waves d. radio waves

A m = 500 kg sack of coal falls vertically onto a m = 2000 kg railroad flatcar which was initially moving horizontally at 3 m/s. no external forces, including friction, act on the flatcar.

What landforms form at convergent boundaries where two oceanic plates collide?

In what state do hydrogen and helium exist in a star

13) The frequency of a vibrating string varies inversely as its length. A string 3 feet long vibrates 175 cycles per second. Find the frequency of a 5 foot string.

Match the following. 1. energy a push or a pull 2. mechanical energy energy of a moving object 3. kinetic energy a force directed away from an object 4. heat the ability to do work 5. work a force moving an object through a distance 6.

Scientists hypothesize that oxygen began to accumulate in earth's atmosphere of living things with the ability to?

The 3 stages of the water cycle are