Estimate the number of times Earth will rotate on its axis during a human's lifetime
A) 3 × 104
B) 3 × 105
C) 3 × 106
D) 3 × 107
E) 3 x 108
A
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Two point charges q1 = 4.0 ?C and q2 = -8.0 ?C are placed along the x-axis at x1 = 0 m and x2 = 0.20 m, respectively. What is the electric potential energy of this system of charges?
A) +1.4 J B) -1.4 J C) -32 J D) 4.0 J E) -4.0 J
A heavily loaded boat is floating in a pond. The boat starts to sink because of a leak but quick action plugging the leak stops the boat from going under, although it is now deeper in the water. What happens to the surface level of the pond?
a. It stays the same. b. It goes up. c. It goes down. d. More information is needed to reach a conclusion.
What are fluid and heat exchanger properties that determine the overall heat exchanger conductance?
What will be an ideal response?
The longest diameter of the Milky Way is about how many light-years?
a. 10 b. 10,000 c. 100 d. 100,000