A kid spins around in a chair 3 times every 1/4 minute. What is the period and frequency of this cycle? *
T = 15s, f = 0.6Hz
T = 5s, f = 0.2Hz
T = 15s, f = 0.2Hz
T = 5s, f = 0.6Hz

What is a possible result of higher air temperature caused by global warming

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

How do you count the total number of atoms present on one side of a chemical equation?