All but one describes an effect of aging on the musculoskeletal system. a) loss of muscle tone b) bones become fragile c) increased osteoporosis d) fluid in joints builds up

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?