You run to your girlfriend's house and announce that you were running at a rate of 15 miles per hour. she knows this is not true because she knows

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.