A student wearing frictionless in-line skates on a horizontal surface is pushed by a friend with a constant force of 50.0 N. How far must the student be pushed, starting from rest, so that her final kinetic energy is 350 J?

What is the relationship between the wavelength of a wave and it's energy?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight