Light consisting of a mixture of red and blue light enters a 40°, 70°, 70° prism along a line parallel to the side opposite the 40° vertex
The index of refraction of the prism material for blue light is 1.530, and for red light it is 1.525. What is the angle between the two emerging beams of light?
A) 0.5°
B) 0.9°
C) 0.1°
D) 0.3°
E) 0.7°
D
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Most of first extrasolar planets found were detected by
A) noting the drop in the star's light as the planet transits its disk. B) imaging them with the HST in the infrared, where they are easier to stop. C) noting the Doppler shifts of the star as the planet orbits it from side to side. D) receiving radio transmissions from them, much like Jupiter emits. E) detecting the oxygen in their atmospheres spectroscopically.
A car travels north at 30 m/s for one half hour. It then travels south at 40 m/s for 15 minutes. The total distance the car has traveled and its displacement are:
a. 18 km; 18 km S. b. 36 km; 36 km S. c. 36 km; 36 km N. d. 90 km; 18 km N. e. 90 km; 36 km N.
The apparent magnitude of a star tells us how bright the star would appear if placed at a distance of 10 pc from the Sun.
Answer the following statement true (T) or false (F)
A principal mechanism for energy loss during nuclear fusion is bremsstrahlung. This loss is associated with
a. x-rays emitted due to electron-ion collisions. b. radiation losses due to T4 losses. c. conduction losses associated with ?T. d. convection losses associated with ?T. e. neutron collisions with atoms of moderator.