Amass m hangs from a uniform rope of length l and mass m. find an expression for
the rope tension as a function of the distance y measured downward from the top of
the rope.

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?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.