As a rotating gas cloud contracts, it spins:
A) faster due to an increase in angular momentum.
B) slower due to a decrease in angular momentum.
C) at a constant rate.
D) faster due to conservation of angular momentum.
E) slower due to conservation of angular momentum.
D
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The intensity of magnetization divided by the applied magnetic field strength is equal to the magnetic _________.
Fill in the blank(s) with the appropriate word(s).
Coronal holes are holes in the chromosphere to allow the solar wind to stream away from the Sun
a. True b. False Indicate whether the statement is true or false
Someone on the near side of the Moon would observe Earth rise once every
a. 24 hours. b. 24 hours and 50 minutes. c. 29.5 Earth days. d. None of these, the observer would never see Earth rise or set.
The value of the electric field for a certain type of electromagnetic wave is 570 N/C. What is the value of the magnetic field for that wave?
A) 2.91 × 10-6 T B) 1.90 × 10-6 T C) 1.10 × 10-6 T D) 1.41 × 10-6 T E) 2.41 × 10-6 T