a water tank is 40m high and contains 4,000 kg of water. What is the gravitational potential energy of the water? show your work with the GUESS method

How do earthquakes form?

Two conductors are made of the same material and have the same length. conductor a is a solid wire of diameter 1.3 mm. conductor b is a hollow tube of outside diameter 8.0 mm and inside diameter 7.0 mm.

Which of the following statements is good advice to prevent becoming overly emotional? A. There is no way to prevent becoming overly emotional. B.

Assume that a pendulum used to drive a grandfather clock has a length L0=1.00m and a mass M at temperature T=20.00°C. It can be modeled as a physical pendulum as a rod oscillating around one end.

When a mass on a spring is at maximum displacement, what quantity is at the minimum

Think of the last five things you read. Now think of a type of reading you havent done recenty have never read. What kind of pattern do you see in your reading? What is your favorite type of reading and your least favorite type of reading?

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?