A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the same direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
a. 1.1 mT
b. 1.4 mT
c. 1.7 mT
d. 2.0 mT
e. 0.2 mT
a
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Which of the following is not an advantage of spacecraft flybys over ground-based telescope observations?
A) Spacecraft can sample the gravitational field of a planet. B) Spacecraft can view "backlit" views of planetary rings. C) Spacecraft can measure local magnetic fields. D) Spacecraft can monitor changes in a planet's atmosphere over long times. E) Spacecraft can make highly detailed images of the planet and its moons.
A spaceship with a constant velocity of 0.800c relative to Earth travels to the star that is 4.30 light-years from Earth. What distance does the space ship travel as measured by a passenger on the ship?
A) 2.58 light-years B) 3.52 light-years C) 4.12 light-years D) 4.30 light-years
If the interaction of a particle with its environment restricts the particle to a finite region of space, the result is the quantization of ____ of the particle
a. the momentum b. the energy c. the velocity d. all of the above properties e. only properties (a) and (b)
The total impedance of an RC circuit with a resistance of 200 ? is 1060 ?. If the frequency of the applied voltage is 20.0 Hz, what is the value of the capacitance in this circuit?
A) 6.64 ?F B) 7.64 ?F C) 8.64 ?F D) 9.64 ?F E) 200 ?F