Describe the differences between a plum pudding model and a nuclear model.

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?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Where do magnetic lines of force enter earth?