An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466 . If a ray of light is incident on the air-to-oil surface at an angle of 40.0° with the normal, what is the angle of the refracted ray in the water?
a. 37.0°
c. 24.2°
b. 26.8°
d. 28.8°
D
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State Newton's second law in terms of momentum
What will be an ideal response?
You want to design an ideal Carnot heat engine that wastes only 35.0% of the heat that goes into it. The lowest cold-reservoir temperature available to you is +15.0°C. If 150.0 J of work is done per cycle, the heat input per cycle is closest to
A) 203 J B) 231 J C) 248 J D) 429 J E) 760 J
A very long wire lies in a plane with a short wire segment. The long wire carries current I, while the short wire of length L carries current i. The two wires are parallel to each other. Which of the following statements are true?
A. The direction of the magnetic force exerted by the long wire on the short wire is directed away from the long wire.
B. The magnitude of the force on the short wire is ?0IiL/2?d.
C. The long wire experiences a force of exactly the same magnitude as the force experienced by the short wire.
The observation of a "wet spot" on a hot highway in the summer is caused by
a. dispersion. b. diffraction. c. refraction. d. reflection.