A 200 kg roller coaster car is located at the top of a hill where the height is 30 m. What is the velocity when it reaches the bottom of the hill? 5.5 m/s 11.2 m/s 16.7 m/s 24.2 m/s

What equation is used to calculate the weight of an object on a plant?

What is translational kinetic energy?

Suppose you have a hypothesis you believe to be correct what should you do to make you become a theory A. Write a letter to the noble prize committee B. Do the same experiment over and over again C.

Based on this excerpt, it can be inferred that a. the war provides the author with his first flying experience. b. the author once felt pride and optimism about the war. c. the US soldiers are trained in hand-to-hand combat. d.

A man cleaning his apartment pushes a vac-uum cleaner with a force of magnitude 42.8 N. The force makes an angle of 16.5◦with the hor-izontal floor. The vacuum cleaner is pushed2.62 m to the right along the floor. Calculate the work done by the 42.

How does the overtone number relate to the standing wave pattern number

Which of the following statements about Em waves is true? A. Em waves all have the same speed B. Em waves all have the same wavelength C. Em waves only travel through water D. Em waves all have the same amount of energy

A teacher has asked four students to state a scientific theory. Which student is correct?

What are the two main currents that affect the US on the east and west coast?

What role do volcanoes play in the flow of energy and cycling of matter on earth?