A25-kg wagon has a momentum of 300kg m/s. what is it’s acceleration?

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?

What is a carrier wave and how does it affect what you hear on the radio

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island