What would happen if you rubbed a piece of fluorite against a piece of feldspar?

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

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?