The solid, nonliving part of the Earth is the
What will be an ideal response?
Lithosphere
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Applications to Astronomy: What is the parallax angle for Proxima Centauri, which is Earth's nearest star at 4.3 ly? The earth's orbit has a mean radius of 1.5 × 108 km, and 1 ly = 9.46 × 1015 m.
A. 1.2 × 10-14 degrees B. 2.1 × 10-4 degrees C. 1.2 × 10-7 degrees D. 2.1 × 10-7 degrees
Consider the three items from Part A that are not relevant to the giant impact hypothesis. As you’ll learn in later chapters, the lack of volcanoes is a result of the Moon’s relatively small size. But what explains the other two items — the Moon’s synchronous rotation and gradually increasing distance from Earth?
a. Both are results of the Moon’s small size. b. Both are results of tidal interactions between the Moon and Earth. c. Synchronous rotation is simply a coincidence, and this coincidence in turn causes the Moon to move farther away with time. d. The giant impact would have caused the Moon to rotate synchronously, and the outward fling from the impact would explain the increasing distance.
With respect to heavy elements, the stars of the Halo are ________ in metals
Fill in the blank(s) with correct word
How much work is required to stretch an ideal spring of spring constant 40 N/m from x = 0.20 m to x = 0.25 m if the unstretched position is at x = 0.00 m?
A) 0.45 J B) 0.80 J C) 1.3 J D) 0.050 J