A flat coil containing 25 identical loops carries 6.4 A of current. When it is placed in a uniform magnetic field of 0.22 T that is oriented parallel to the plane of the coil, the magnetic torque on it is 3.7 N ? m
(a) What is the magnetic moment of the coil?
(b) What is the area of each loop?
(a) 17 A ? m2 (b) 0.11 m2
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If the natural log of the viscosity is plotted as a function of the inverse of the absolute temperature, the slope of the line is equal to the _________of activation for plastic strain divided by Boltzmann’s constant.
Fill in the blank(s) with the appropriate word(s).
Which of the following hypothetical observations would contradict current understanding of the nature of white dwarfs?
A) discovery of a white dwarf with a mass of 1.5 MSun B) discovery of a white dwarf with a surface temperature of 6000 K C) discovery of a white dwarf at the center of a planetary nebula D) discovery of a white dwarf with a 1.5 MSun mass main-sequence companion
One similarity between photons and Z particles is that
A) both have mass. B) both have charge. C) both travel at lightspeed. D) both are exchange particles for the strong force. E) both are exchange particles for the electroweak force.
If 3 different conservative forces and one non-conservative force act within a system, how many potential energy terms appear in the energy equation that describes the system?
1.0 2.1 3.3 4.4