If the polar ice caps melted and flowed toward the equator, the rotation of Earth would tend to
1) decrease in angular speed,
2) be unchanged,
3) increase in angular speed,
with the result that the day would be
4) slightly longer.
5) slightly shorter.
6) unaffected.
Answer: 1, 4
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Two point charges are on the x-axis. One charge, 
is located at the origin, and the other charge, 
is located at x = 9.00 m. What is the force on 
?
A. 20.0 nN in the positive x-direction B. 20.0 pN in the positive x-direction C. 20.0 nN in the negative x-direction D. 20.0 pN in the negative x-direction E. 180 nN in the positive x-direction
The large, dark mare on Ganymede were created by water that erupted from within the moon
Indicate whether the statement is true or false
Rank the following kinds of waves according to their speeds from fastest to slowest:
(a) gamma rays (b) microwaves (c) radio waves (d) visible light (e) x-rays
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What will be an ideal response?