Frieda stands on a hill with a slope of 62 if her mass is 49 what is the magnitude of the normal force acting on her A. 424 N
B. 512 N
C. 480 N
D. 226 N

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.