An unpolarized beam of light of a single pure color can be split apart into two separate beams by using
A. a birefringent material like calcite.
B. the human retina.
C. a thin layer of oil.
D. metal-ceramic inversion.
Answer: A
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An ideal heat engine can have an efficiency of 1 if the temperature of the low temperature reservoir is
A. 0 K. B. 0°C. C. 0°F. D. 0°R. E. the same as the temperature of the heat source.
Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. The edges of the two mirrors meet at a 30° angle. A light ray that approaches mirror 1 is parallel to mirror 2 . The angle of reflection of that ray from mirror 1 is
a. 0°. b. 30°. c. 60°. d. 90°. e. 120°.
List the seven physical properties for identifying minerals
What will be an ideal response?
A bubble having a diameter of 1.00 cm is released from the bottom of a swimming pool where the depth is 5.00 m. What will the diameter of the bubble be when it reaches the surface? The temperature of the water at the surface is 20.0°C, whereas it is 15.0°C at the bottom. (The density of water is 1.00 × 10^3 kg/m3.)
a. 1.05 cm b. 1.15 cm c. 1.45 cm d. 1.65 cm e. 1.35 cm