A metal block is sliding down a frictionless inclined ramp that makes 35 degrees with respect to the horizontal, and it takes 4.8 seconds to reach the bottom of the ramp. Now if a sand paper is inserted between the metal block and the ramp, and the run is repeated, it takes longer time to reach the bottom of the ramp because now there is a frction between the metal block and the ramp with the coefficient of kinetic friction being μk = 0.19. Based on these experimental data, what is the velocity of the block when it reaches the bottom of the ramp for the latter frictional run? please show work

True or false graphs must include scales that increase by the same amount

Which word expression describes how much to calculate pressure

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.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 2.05cm in front of the eye.)