An object undergoes uniform circular motion. If the radius of curvature and mass of the object are constant, what is the centripetal force proportional
to?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?