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Question
A wire with a length of 150 m and a radius of 0.15 mm carries a current with a uniform current density of 2.8 ï‚´ï€ 107 A/m2. The current is:A) 0.63 A
B) 2.0 A
C) 5.9 A
D) 300 A
E) 26000 A
Answer
This answer is hidden. It contains 1 characters.
Related questions
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The intensity of the microwave background radiation, a remnant of the big bang:
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D) is proportional to the square of the distance from us
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The velocities of distant objects in the universe indicate that the time elapsed since the big bang is about:
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D) one quark and one antiquark
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Any meson is a combination of:
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Q:
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B) an omega minus
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Q:
A neutral lepton cannot decay into two neutrinos. Of the following conservation laws, which would be violated if it did?
A) Energy
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Q:
An electron participates in:
A) the electromagnetic and weak forces only
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Q:
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For a controlled nuclear fusion reaction, one needs:
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B) high number density nand low temperatureT
C) low number density nand high temperature T
D) low number density nand low temperature T
E) high number density nand temperature T = 0 K
Q:
The first step of the proton-proton cycle is:
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Nuclear fusion in the Sun is increasing its supply of:
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Q:
The purpose of a moderator in a nuclear reactor is to:
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The energy supplied by a thermal neutron in a fission event is essentially its:
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Q:
A certain nucleus, after absorbing a neutron, emits a and then splits into two alpha particles. The (A, Z) of the original nucleus must have been:A) 6, 2B) 6, 3C) 7, 2D) 7, 3E) 8, 4
Q:
Radioactive polonium, 214Po (Z= 84), decays by alpha emission to:
A) 214Po (Z= 84)
B) 210Pb (Z= 82)
C) 214At (Z= 85)
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Q:
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Q:
Bombardment of 28Si (Z= 14) with alpha particles may produce:
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B) hydrogen and 32S (Z= 16)
C) a deuteron and 27Al (Z= 13)
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