A single thin slit forms a diffraction pattern when illuminated with monochromatic light. The fourth minimum of the pattern occurs at an angle of 32.0° away from the central maximum. At what angle does the fifth minimum occur?
A) 41.5°
B) 41.0°
C) 40.5°
D) 42.0°
E) 42.5°
A
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Suppose you are observing a light bulb. In this context, which of the following is a difference between intrinsic brightness and apparent brightness?
A) The wattage of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its distance from you. B) The size of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its wattage. C) The distance from the source of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its size. D) The visual wavelength of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its distance from a neighboring light bulb.
If water vapor were released from Venus's surface because of tectonic activity into its upper atmosphere, what would most likely happen to it?
a. The water vapor would relieve the greenhouse effect and decrease Venus's surface temperature. b. Water droplets would condense into rain and form lakes on Venus's surface. c. The water vapor would chemically react with carbon dioxide and form acid rain. d. UV light would break apart the water molecules, and the hydrogen would be lost into space. e. It would rise into the atmosphere and form hurricane-like storms.
A 70-kg laboratory technician absorbs 2.9 mJ of 0.50-MeV gamma rays in a workday. How many gamma-ray photons does the technician absorb in a workday?
A) 3.6 × 1010 B) 3.6 × 109 C) 3.6 × 108 D) 1.0 × 109 E) 1.0 × 108
Why is Venus so much hotter than Earth?
A) Venus has significant amounts of carbon dioxide in its atmosphere. B) Venus is more massive. C) Venus rotates more slowly. D) Venus was formed before the Earth was. E) Venus is closer to the Sun.