Weight is equal to:
A. mg^2
B. m/g
C. mg
D. m^2g

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon