White light is spread out into spectral hues by a grating. If the grating has 2000 lines per centimeter, at what angle will red light (640 nm) appear in the first order?
A)
3.57°
B)
7.35°
C)
11.2°
D)
13.4°
E)
14.7°
B
Physics & Space Science
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Which of the following moons is most volcanically active?
A. Ganymede B. Io C. Callisto D. Titan E. Europa
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How many stars that are within the Milky Way Galaxy are seen in the Hubble Deep Field image?
A) about 10 trillion B) thousands C) an infinite number D) about 100 billion E) several
Physics & Space Science
________ major contribution to astronomy is his extensive series of measurements of planetary positions.
A. Kepler's B. Copernicus's C. Galileo's D. Tycho Brahe's
Physics & Space Science
Note the expression: y = A/x3 . Which statement is most consistent with this expression?
a. y is less than A. b. If x is halved, y is multiplied by eight. c. If x is doubled, y is multiplied by a factor of 8. d. y is greater than x.
Physics & Space Science