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Question 11
Which one of the following quantities is a vector quantity?
The earth's pull on your body
A.
The mass of a soccer ball
B
С
The number of people attending a cricket game
D
The age of your lecturer
E Today's weather temperature high

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