What is the energy density in the magnetic field 25 cm from a long straight wire carrying a current of 12 A? (?0 = 4? × 10-7 T ? m/
A)
A) 7.3 × 10-5 J/m3
B) 3.7 × 10-5 J/m3
C) 3.6 × 10-4 J/m3
D) 1.2 × 10-4 J/m3
E) The density cannot be determined without knowing the volume.
B
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When ice melts, its temperature increases
Indicate whether the statement is true or false
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A. The string with the larger tension. B. The string with the smaller tension. C. Both must have the same number of antinodes.
An amount of an ideal gas is taken around the process shown. Which of the following statements about the internal energy of the states is true?