Asmall sphere with mass 5.00×10−7 kg and charge +8.00 μc is released from rest a distance of 0.500 m above a large horizontal insulating sheet of charge that has uniform surface charge density σ = +8.00 pc/m2.

using energy methods, calculate the speed of the sphere when it is 0.100 m above the sheet.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

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

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery