The device that is made up of many single slits that diffract light and form a diffraction pattern , is called

Explain why electric current cannot exist if a current doesn't have a voltage source.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.