A solenoid of length 0.700 m having a circular cross-section of radius 5.00 cm stores 6.00 µJ of energy when a 0.400-A current runs through it
What is the winding density of the solenoid? (?0 = 4? × 10-7 T ? m/A)
A) 865 turns/m
B) 472 turns/m
C) 1080 turns/m
D) 104 turns/m
E) 327 turns/m
D
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What is the potential at a distance of 0.0529 nm from a proton?
A. 13.6 no B. -13.6 no C. 27.2 V D. -27.2 no E. 9.11 pC
Fusing two carbon nuclei would occur with
A) absorption of energy. B) release of energy. C) neither of these
Second Law of Thermodynamics: The second law of thermodynamics leads us to conclude that
A. the total energy of the universe is constant. B. disorder in the universe is increasing with the passage of time. C. it is theoretically possible to convert heat into work with 100% efficiency. D. the average temperature of the universe is increasing with the passage of time. E. the entropy of the universe remains constant.
The Schwarzchild radius of a black hole is that radial distance from the center of a sphere within which not even light can escape. It was first discovered mathematically by Schwarzchild in 1916 after Einstein published his general relativity theory
It can be calculated from a star's mass M as: R = 2GM/c2. If the mass of star G is twice as much as the mass of star H, the average density of star G compared to star H will be A) twice as much. B) half as much. C) four times as much. D) one-fourth as much. E) eight times as much.