A narrow slit is illuminated with sodium yellow light of wavelength 589 nm. If the central maximum extends to ±30.0°, how wide is the slit?
a. 0.500 mm
b. 2.20 × 10^-6 m
c. 3.33 × 10^-5 m
d. 1.18 mm
e. 5.89 mm
D
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Venus and Earth probably formed with similar amounts of carbon dioxide in their secondary atmospheres. Which of the following is true?
a. The majority of Earth's carbon dioxide escaped into space because of its hotter temperature, whereas Venus's carbon dioxide remains gravitationally bound to Venus. b. The majority of Earth's carbon is now bound up in rock, whereas Venus's remains in its atmosphere. c. Earth lost more of its secondary atmosphere because it was bombarded by more planetesimals than Venus. d. The majority of Earth's carbon was absorbed by plants during photosynthesis. e. Earth and Venus still have equal amounts of carbon dioxide in their atmospheres.
The apparent visual magnitude difference between two stars is 10 and thus the approximate intensity ratio is 10,000
a. True b. False Indicate whether the statement is true or false
Einstein's special theory of relativity deals with objects that are
a. being hit by X-rays. b. entering intense gravitational fields. c. moving close to the speed of light. d. being hit by energetic photons.
The linear relationship between stress and elastic strain is known as _____________law
Fill in the blank(s) with the appropriate word(s).