Diagram 6-2 illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see an absorption spectrum?
a.
1
b.
2
c.
3
d.
2 and 3
e.
none of them
C
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Small ____________ can confine sections of Saturn's rings to produce sharp edges or narrow ringlets
Fill in the blank(s) with correct word
The amount of gravitational potential energy released as an object falls depends on
A) its mass and the distance it falls, as well as the rate of gravitational acceleration. B) its mass and its speed at the time it begins falling. C) only the distance it falls. D) only its mass. E) only its speed at the time it begins falling.
Estimate the buoyant force of 1-mm-diameter water vapor bubbles in sea water at 100C. Sea water can be assumed to have a density 10% more than pure water, and the surface tension of water can be assumed to be 65 mN/m.
What will be an ideal response?
In composition, the ________ planets have rocky materials like the asteroids
Fill in the blank(s) with correct word