Which planet has a temperature of 400 degrees Centigradeon the side facing the Sunand -180 degrees Centigrade on the side opposite the Sun?
a) Mars
b) Venus
c) Earth
d) Jupiter
e) Mercury
Ans: e) Mercury
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Because he failed to observe stellar ________, Aristotle wrongly concluded we could not be in orbit around the Sun
Fill in the blank(s) with correct word
How was the value of G first determined?
a. by Cavendish, using a torsion balance b. by Eötvös, using a torsion balance c. via a gedanken experiment d. by Newton, watching an apple fall e. none of the above
The coil of a generator has 50 loops and a cross-sectional area of 0.25 m2. What is the maximum emf generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?
A) 100. V B) 50. V C) 400. V D) 75. V E) 0. V
RC Circuits: A charged capacitor is connected in series with a resistor and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the resistor as a function of time t?
A. A B. B C. C D. D E. E