A superconducting wire carries a current of 104 A. Find the magnetic field at a distance of 0.25 m from the wire. (µ0 = 4p × 10^-7 T×m/A)
a. 1.6 × 10^-2 T
c. 8 × 10^-3 T
b. 2 × 10^-3 T
d. 3.2 × 10^-2 T
C
You might also like to view...
Which of the following is a threat to the ozone layer?
A) coal burning B) freon refrigerants C) Both of the above. D) automobile exhaust E) None of the above.
Four identical particles (mass of each = 0.24 kg) are placed at the vertices of a rectangle (2.0 m × 3.0 m) and held in those positions by four light rods which form the sides of the rectangle. What is the rotational inertia of this rigid body about an axis that passes through the center of mass of the body and is parallel to the shorter sides of the rectangle?
a. 2.4 kg/m2 b. 2.2 kg/m2 c. 1.9 kg/m2 d. 2.7 kg/m2 e. 8.6 kg/m2
The terrestrial planets in our solar system are
A) Mercury, Venus, Earth, and Mars. B) Jupiter, Saturn, Uranus, and Neptune. C) Mercury, Venus, Earth, Mars, and Pluto. D) Jupiter, Saturn, Uranus, Neptune, Pluto, and Eris.
In an article in the New York Times,(75) A. Revkin pointed out that: "In the early 1970s, when scientists first reported that CFCs could destroy ozone, some theorized that the effect would be most discernible in the highest reaches of the
atmosphere over the tropics, partly because of the abundance of sunlight." What happened when the experiments were performed? Explain how the conditions mandated this experimental result.