Honeybees acquire a charge while flying due to friction with the air. a 100 mg bee with a charge of +23 pc experiences an electric force in the earth’s electric field, which is typically 100 n/c, directed downward.
a) what is the ratio of the electric force on the bee to the bee's weight?
b) what electric field strength would allow the bee to hang suspended in the air? express your answer with the appropriate units.

What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?

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

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value