Numerical Response 7 Electromagnetic radiation with a frequency of 1.26 x 1015 Hz has a wavelength of a. bc x 10-4m.
The values for a b. c and d are
and

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.