A vertically polarized beam of light of intensity 100 W/m2 passes through two ideal polarizers. The transmission axis of the first polarizer makes an angle of 20.0° with the vertical, and the transmission axis of the second one makes an angle of 40.0° with the vertical. What is the intensity of the light after it has passes through both polarizers?
A) 22.2 W/m2
B) 44.4 W/m2
C) 66.6 W/m2
D) 78.0 W/m2
E) 11.7 W/m2
D
You might also like to view...
2.9x107 is the same as
a. 2.9 thousand b. 29 thousand c. 290 thousand d. 2.9 million e. 29 million
Using the scale in the diagram below, what is the diameter of Jupiter?
a.
about 7.0 × 104 km
b.
about 7.0 × 105 km
c.
about 1.4 × 104 km
d.
about 1.4 × 105 km
e.
about 3.5 × 106 km
Charge of uniform density 12 nC/m is distributed along the x axis from x = 2.0 m to x = 5.0 m. What is the electric potential (relative to zero at infinity) at the origin (x = 0)?
a. 91 V b. 99 V c. 82 V d. 74 V e. 140 V
Two masses, MA and MB, with MB = 2MA, are released at the same time and allowed to fall straight down. Neglect air resistance. When we compare their kinetic energies after they have fallen equal distances, we find that
a. KB = KA. b. KB = 2KA. c. KB = 4KA. d. KA = 2KB. e. KA = 4KB.