Which one of the following actions would make the maxima in the interference pattern from a grating move further apart? increasing the wavelength of the laser. increasing the frequency of the laser. decreasing the wavelength of the laser. decreasing the number of lines per length

Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius 푅=0.381meters and mass 푀=3.1푘푔. initially 푚"is on the ground and 푚#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of 푚#just before it strikes the ground. assume the pulley bearing is frictionless.