An ideal gas is in a sealed container. by what factor does the gas temperature change if the volume is doubled and the pressure is tripled?

What are two different ways you could find the value of a? explain these methods.

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

Ajoint produces movement when its angle decreases. which type of movement is it?