A roller coaster car of mass M=200 KG is released from rest at the top of a 60 m high hill (position a )and rolls with negligible friction down the hill ,through a circular loop with a height of 40 M ( positions B, C and D) and along a horizontal track (to position E)

Which three statements represent the benefits of performing experiments using computer simulations?

If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms

Select the correct answer. why are scientific models important in the study of science? a. they always involve critical mathematical calculations. b. they scientists understand complex ideas and objects that aren’t easy to handle. c. they enable scientists to popularize their work in society. d. they are required when conducting any peer review process. e. they are necessary for turning a hypothesis into a law.