Several forces are applied to an object the object starts from rest moves a certain distance d then returns to rest which statement correctly describes the work done by the forces acting on the object a. The net work done by all the forces is zero
b. The net work done by conservative forces is zero
c. The net work done by the conservative forces is positive

Which type of microscope would allow the viewer to see ribosomes inside a cell?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

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