The solar magnetic field is strongest in those regions called ________, which are poles and usually thus occur in pairs
Fill in the blank(s) with correct word
sunspots
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A pencil partially submerged in a glass of water appears broken or offset because of
a. polarization. b. diffraction. c. interference. d. refraction.
Magnetic Field of a Long Wire: Three long parallel wires each carry 2.0-A currents in the same direction. The wires are oriented vertically, and they pass through three of the corners of a horizontal square of side 4.0 cm. What is the magnitude of the magnetic field at the fourth (unoccupied) corner of the square due to these wires? (?0 = 4? × 10-7 T ? m/A)
A. 1.2 µT B. 2.1 µT C. 12 µT D. 21 µT E. 0 T
Suppose that the light from the sun suddenly shut off all over the sun, precisely at noon, as measured by clocks placed near the sun. Viewed from Earth, how would this appear? (HINT: It is about 8 light-minutes to the sun.)
A) Nothing unusual would happen, as viewed from Earth. B) At noon, all sunlight would suddenly cease. C) At about 8 minutes past noon, all sunlight would suddenly cease. D) After about 8 minutes, the sun would turn into Daffy Duck. E) At about 8 minutes past noon a small black spot would appear in the center of the sun, and this black spot would rapidly spread out over the entire sun.
The graph below indicates the temperature of Saturn's atmosphere as a function of distance from the upper cloud layer. Water will condense to form droplets at a temperature of approximately 270 K in the atmosphere of Saturn. At what distance from the upper cloud layer will clouds of water vapor form?
a.
-250 km
b.
-150 km
c.
0 km
d.
150 km
e.
250 km