Radio waves in space travel at the speed of light, c= 3.0*10^8 m/s. Determine the frequency and period of a 1.0 km long radio wave

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?