Which statement about the speed of light is true? a. the speed of light is faster for em waves traveling through a medium. b. no object or em wave can move faster than the speed of light in a vacuum. c. the speed of light changes depending on the motion of the source. d. energy, frequency, and wavelength all affect the speed of light.

Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Which governments provide garbage collection services to homes and businesses