Which of the following is NOT an example of a mechanical wave?
A) ultraviolet rays radiating from the sun to tan you on the beach
B)vibrations of a guitar string
C)ocean waves
D)sound waves

A1kg cart slams into a stationary 1kg cart at 2 m/s. the carts stick together and move forward at a speed of 1 m/sl. determine whether kinetic energy was conserved in the collision. use the law of conservation of energy to explain the collision

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

Arock collection comes from which part of earth?