You are riding in the backseat of a car driving down main street you were at rest compared to O A car driving in the other direction

O The person driving in the car

O The person in the library parking lot

O A stops sign

All waves on the electromagnetic spectrum travel at the same speed in a vacuum. the speed of these waves in a vacuum is 3x108 m/s. as the wavelength of a wave doubles, how does the speed and frequency of the wave change? a) the speed remains the same and the frequency is halved. b) the frequency remains the same and the speed is halved. c) the speed remains the same and the frequency is doubled. d) the frequency remains the same and the speed is doubled.