What is the potential difference between the ends of bulb A?
A. 1.5 V
B. 1.2 V
C. 0.5 V
D. 0.3 V
E. 0.15 V
F. Some other value (specify)
B. 1.2 V
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On the celestial sphere, the Sun
A) circles once each year along the path called the ecliptic. B) stays always at the same fixed point among the stars. C) circles daily around the celestial equator. D) is the central object.
On average, approximately how fast do plates move with plate tectonics on Earth?
A) a few centimeters per year B) a few millimeters per century C) a few centimeters per century D) They do not move at all, except during earthquakes. E) a few kilometers per hour
What gives the most direct view into the Sun's core?
What will be an ideal response?
The coefficients of friction for plastic on wood are ?s = 0.50 and ?k = 0.40. How much horizontal force would you need to apply to a 3.0-lb plastic calculator to start it moving from rest?
A) 1.2 N B) 2.7 N C) 6.7 N D) 0.15 N E) 0.50 N