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

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.