Determine the temperature associated with the radiation emitted from a black body radiator such that its color appears to be (a) Red, (b) Blue, (c) Green, (d) Yellow, and (e) Purple.
What will be an ideal response?
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Polarization: Unpolarized light of intensity I0 passes through four ideal polarizing sheets. The polarizing angle of each sheet is rotated 30° from the one before it, so that the last sheet is aligned at 90° to the first sheet. What is the intensity of the light emerging from the fourth sheet in terms of I0?
Fill in the blank(s) with the appropriate word(s).
First Law of Thermodynamics: A 10-L flask and a 1-L flask each contain two moles of ideal diatomic gas (but not the same gas) at 25°C. Which of the following statements about these gases must be true? (There could be more than one correct choice.)
A. The internal (thermal) energy of the gas in both flasks is the same. B. The internal (thermal) energy of the gas in the larger flask is greater than the internal (thermal) energy of the gas in the smaller flask. C. The internal (thermal) energy of the gas in the smaller flask is greater than the internal (thermal) energy of the gas in the larger flask. D. The molecules in the larger flask have the same root-mean-square speed as those in the smaller flask. E. The molecules in the smaller flask have the same average kinetic energy per molecule as those in the larger flask.
A plot of land contains 5.8 acres. How many square meters does it contain? [1 acre = 43,560 ft2]
A) 2.3 × 104 m2 B) 7.1 × 103 m2 C) 7.0 × 104 m2 D) 5.0 × 104 m2
Acceleration and velocity are
A) different names for the same idea. B) very different from each other. C) concepts developed by Aristotle. D) none of the above