Does the color of the color of the light change during refraction or reflection?

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Human population projections are subject to change due to fluctuations in global fertility and mortality rates