A 600 mW laser beam is polarized vertically. It then passes through two polarizers. The axis of the first polarizer is oriented at 45 degrees from the horizontal, and that of the second is oriented at 20 degrees from the horizontal. What is the power of the transmitted beam in mW

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.