Because it can support huge Olympus Mons, and does not show tectonics on the scale of Earth, we conclude the crust of Mars must be ________ than ours
Fill in the blank(s) with correct word
thicker
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The semimajor axis of an ellipse is
a. the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse. b. half the length of the shortest diameter of the ellipse. c. half the length of the longest diameter of the ellipse. d. the distance between the two foci of the ellipse. e. the ratio of the distance between the two foci to the length of half the longest diameter of the ellipse.
A star approaching Earth will show spectral lines that are shifted to longer wavelengths.
Answer the following statement true (T) or false (F)
You have discovered a star system consisting of three equally spaced stars of equal mass arranged in a straight line. The two outermost stars, Zenith and Nadir, revolve synchronously around the central star, Janus
What is the period of revolution for this system in terms of M, the mass of each of the stars, and R, the radius of the circular orbit of Zenith and Nadir? A) [2?R3/2/(GM)1/2] × (3/2)1/2 B) [2?R3/2/(GM)1/2] × (2/3)1/2 C) [2?R3/2/(GM)1/2] × (4/5)1/2 D) [2?R3/2/(GM)1/2] × (5/4)1/2 E) [2?R3/2/(GM)1/2] × (7/5)1/2
In an RLC series circuit, if the AC frequency is decreased to a very small value, what value does the phase angle between the current and voltage approach?
a. 90° b. 0° c. –90° d. 45°