Polarization: If unpolarized light of intensity I0 passes through an ideal polarizer, what is the intensity of the emerging light?
A. I0
B. I0/2
C. I0/4
D. I0/
E. I0/16
Answer: B
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A key feature of the Falkirk Wheel in Scotland is that opposite gondolas have the same weight when both are brim-full of water
A) and boats in each have about equal weights. B) and at least one boat is in each gondola. C) regardless of the weights of boats or no boats in each. D) none of the above
The solar neutrino problem was solved when we realized neutrinos change types when they pass through matter
Indicate whether the statement is true or false
A force of 7.2 N acting on a 1.0-kg object initially at rest moves it through a parallel distance of 2.5 m. Neglecting friction, what is the speed of the object when it is moved 2.5 m?
A metal rod of length L in a region of space where a constant magnetic field points into the page rotates clockwise about an axis through its center at constant angular velocity ?. While it rotates, the point(s) at lowest potential is(are)
a.
A.
b.
B.
c.
C.
d.
D.
e.
A and E.