. What happens when a lump of ice at 0 °C is placed in a beaker, of water at 0 °C in a room at 0 °C? A nothing
B. all the ice melts
C. only some of the ice melts
D. only some of the water freezes
(I need the answer asap)

Can anybody me with this? ? (picture included.)

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

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