Polarization: Three ideal polarizers are oriented as follows: The axis of the second polarizer is at an angle of 59.0° relative to the first one. The axis of the third polarizer is at an angle of 31.0° relative to the second one, so the axis of the axis of the third polarizer is perpendicular to the axis of the first one. Unpolarized light of intensity 18.6 W/m2 is incident on the first polarizer.(a) What is the intensity of the light after it passes through all three polarizers?(b) What is the intensity of the transmitted light if the second polarizer is removed?
What will be an ideal response?
(a) 1.81 W/m2 (b) 0 W/m2
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A) coal. B) petroleum. C) natural gas. D) uranium.
If 700 Joules of heat is added to a system, and the internal energy increases by 450 Joules, how much work is done by the system?
a. –1150 J b. –250 J c. 700 J d. 250 J e. 1150 J
Consider the Bohr model for the hydrogen atom in its second excited state
(a) Determine the binding energy (eV) of the electron. (b) What is the radius of the electron orbit, given that r1 = 0.0529 nm? (c) How far is it from the next higher excited orbit?
A hose has been clamped so that the area at the clamp is only one quarter the area of the rest of the hose. When we ignore the viscosity of water, the ratio of the speed of the water through the clamped area to the speed of the water when it leaves the hose is
A.
.B.
.C.
D.
E.