Suppose you want to represent the velocity of a BALL with respect to a particular frame of reference from aboard a moving TRAIN. You would most likely write the velocity of the ball using the symbol v with the subscript(s):

What is magnetic flux? explain faraday's law of induction.

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?

Which of the following is an example of motion in two dimensions?