A polarizer is oriented at an angle ? to the vertical. If the vertically polarized beam of light of intensity 200 W/m2 passes through the polarizer, what is the transmitted intensity of light for an angle of 20.0°?
A) 35.0 W/m2
B) 44.4 W/m2
C) 177 W/m2
D) 23.0 W/m2
E) 200 W/m2
C
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The theory of seafloor spreading is supported by
A) geological, biological, and climatological data. B) paleomagnetic analysis of the ocean's floor. C) the change in Earth's polarity. D) none of these
If you add 1.33 MJ of heat to 500 g of water at 50°C in a sealed container, what is the final temperature of the steam?
The latent heat of vaporization of water is 22.6 × 105 J/kg, the specific heat of steam is 2010 J/kg ? K, and the specific heat of water is 4186 J/kg ? K. A) 100°C B) 112°C C) 123°C D) 147°C E) 195°C
Radio astronomers often study the radiation emitted by a hydrogen atom from a transition between the two hyperfine levels associated with the ground state
This radiation has a wavelength of 21 cm. What is the energy difference between the hyperfine levels? (1 eV = 1.60 × 10-19 J) A) 5.9 × 10-6 eV B) 5.9 × 10-25 J C) 1.7 × 10-24 J D) 4.7 × 10-25 J
The name of the transuranium element commonly used in smoke detectors is ______________
Fill in the blank(s) with correct word