When a liquid boils, the increase in volume is typically a factor of
A. 10
B. 100
c. 1000
D. 1,000,000
Answer: c. 1000
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If we double only the amplitude of a vibrating ideal mass-and-spring system, the mechanical energy of the system
A) increases by a factor of . B) increases by a factor of 2. C) increases by a factor of 3. D) increases by a factor of 4. E) does not change.
Strictly speaking, the sum of the angles on a triangle equals 180 degrees
A) in flat space. B) on a spherical surface. C) on a saddle-shaped surface. D) all or any of the above E) none of the above
The substance that comes from a nuclear reactor which is used to generate power is
A. graphite. B. radioactive materials. C. enriched uranium. D. high-pressure steam.
A uniformly charged rod (length = 2.0 m, charge per unit length = 3.0 nC/m) is bent to form a semicircle. What is the magnitude of the electric field at the center of the circle?
a. 64 N/C b. 133 N/C c. 48 N/C d. 85 N/C e. 34 N/C