In which scenario does Einstein's theory apply, but not Newton's? comparing the gravitational forces between two systems

measuring how much energy light loses while it travels

calculating the speed of a satellite orbiting Earth

landing a spaceship on the moon

The material that keeps its new shape after it is stretched is called?

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?