Given that the wavelengths of visible light range from 400 nm to 700 nm, what is the highest frequency of visible light?

During your summer internship for an aerospace company, you are asked to design a small research rocket. the rocket is to be launched from rest from the earth's surface and is to reach a maximum height of 910 m above the earth's surface. the rocket's engines give the rocket an upward acceleration so it moves with acceleration of 16.0 m/s2 during the time t that they fire. after the engines shut off, the rocket is in free fall. ignore air resistance.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?