We know the Sun rotates differentially by observing sunspots; as with Jupiter the solar equator rotates the fastest
Indicate whether the statement is true or false
TRUE
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Two identical steel balls are released from rest from the same height and travel along tracks as shown and labeled below
A mercury thermometer has a glass bulb of interior volume 0.100 cm3 at 10°C. The glass capillary tube above the bulb has an inner cross-sectional area of 0.012 mm2. The coefficient of volume expansion of mercury is 1.8 × 10-4 K-1
If the expansion of the glass is negligible, how much will the mercury rise in the capillary tube when the temperature rises from 5°C to 35°C if the bulb was full at 5°C? A) 0.45 mm B) 4.5 mm C) 45 mm D) 45 cm
If R = 4.0 k?, C = 3.0 mF, ? = 15 V, Q = 12 mC, and I = 2.0 mA, what is the potential difference Vb ? Va?
a.
+3.0 V
b.
?19 V
c.
?3.0 V
d.
+27 V
e.
+21 V
If atmospheric refraction did not occur, how would the apparent time of sunrise and sunset be changed?
a. Both would be later. b. Both would be earlier. c. Sunrise would be later and sunset earlier. d. Sunrise would be earlier and sunset later.