A 1-centimeter cubed sugar cube scaled up by a factor of 10 has a total surface area of
A) 60 cm2.
B) 600 cm2.
C) 6000 cm2.
D) none of the above
Answer: B
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It's 6 A.M. and the Moon is at its highest point in your sky (crossing the meridian). What is the Moon's phase?
A) new B) first quarter C) full D) third quarter
What is the change of entropy associated with 3.0 kg of water freezing to ice at 0.°C?
A) -1.1 kcal/K B) -0.88 kcal/K C) 0 kcal/K D) 1.0 kcal/K E) +0.88 kcal/K
The use of fiberglass insulation in the outer walls of a building is intended to minimize heat transfer through the wall by what process?
a. conduction b. radiation c. convection d. vaporization
Captain Ray, on the Galactic Explorer, sets off bright signal lights at the two ends of his spaceship so that they are seen as flashing simultaneously by General Kay, who is watch the ship go by. General Kay concludes that she was next to the midpoint of the ship at the instant when the lights flashed in her reference frame. This can only happen if Captain Ray, at the center of the Galactic
Explorer, a. sees the lights flash simultaneously in his coordinate system. b. sees the bow (front) light flash before the aft (rear) light. c. sees the aft (rear) light flash before the bow(front light. d. can calculate that the light flashes reach General Kay so that the flash from the bow light reaches her before the flash from the aft light. e. can calculate that the light flashes reach General Kay so that the flash from the aft light reaches her before the flash from the bow light.