A particle has 3 x 10^15 eV has a charge of 3uC is placed on a certain field. a. solve for electric potential difference, assuming the energy flow comes form a higher value going to 0
b. Solve for velocity of particle
c. solve for equipotential if the other point has an electric potential of 5V less than the answer in a.

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

What is the angular momentum of the bar about the axle?

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