Assuming that light could curve around Earth, about how long would it take for one trip?
A. 1 second
B. 1/7 second
C. 7 minutes
D. 7 seconds
Answer: B
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Thermal Expansion: A glass flask has a volume of 500 mL at a temperature of 20°C. The flask contains 492 mL of mercury at an equilibrium temperature of 20°C. The temperature is raised until the mercury reaches the 500 mL reference mark. At what temperature does this occur? The coefficients of volume expansion of mercury and glass are 18 × 10-5 K-1 (mercury) and 2.0 × 10-5 K-1 (glass).
A. 120°C B. 110°C C. 100°C D. 140°C E. 130°C
A charged particle with charge + 5.0 ?C is initially at rest. It is accelerated through a potential difference of 500 V. What is the kinetic energy of this charged particle?
A) 2.5 × 10-3 J/m B) 2.5 × 10-3 J C) 2500 J D) 2500 J/m E) 0 J
What kind of reactor produces more fissionable fuel than it consumes?
A) AOLA B) LOCA C) moderated D) heavy water E) breeder
A cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces. No other charges are nearby. Through how many of the cube’s faces is the electric flux zero?
1.0 2.2 3.4 4.6