Problem 1: A ball on the surface of a pool bobs up and down due to the waves formed in the pool. The water waves have a wavelength of 1.2 meters, and they pass the ball with a frequency of 3 hertz. What is the speed of the waves? Part B: From the Library, select the general equation to solve for the speed of a wave. Then click Done.

What are chlorofluorocarbons and what impact do they have on the atmosphere?

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?