A) calculate the frequency of light having a wavelength in vacuum of 5.89 x 10^-7 m. b) determine the velocity of this light and its wavelength in water (n = 1.33) and crown glass (n = 1.50)

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

If you put a helium-filled balloon in the refrigerator, what will happen?

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.