The magnetic field at a point P, a certain distance from a long wire carrying a current of 2.0 A, is 1.2 × 10-6 T. How far is P from the center of the wire?
A) 11 cm
B) 22 cm
C) 33 cm
D) 44 cm
E) 55 cm
C
You might also like to view...
A(n) _______________ is an object that orbits the Sun and is spherical, but not large enough to have the gravitational influence to clear away remaining objects orbiting nearby
Fill in the blank(s) with correct word
A swimmer swims 20 laps in a north-south facing pool in 7.00 minutes. Her first lap is toward the north. Her displacement and average velocity are
a. 0; 0. b. 0; 2.38 m/s, south. c. 0; 2.38 m/s, north. d. 1 000 m, south; 2.38 m/s, south. e. 1 000 m, north; 2.38 m/s, north.
A semiconductor can conduct electricity
A) only below room temperature. B) never. C) only very much above room temperature. D) at room temperature but conductivity increases with increasing temperature. E) at room temperature but conductivity decreases with increasing temperature.
What is the maximum wavelength photon that can produce a pair of tau particles (rest mass 1.777 GeV/c2) by pair production?
A. 8.72 x 10-8nm B. 3.49 x 10-7nm C. 6.98 x 10-7nm D. 1.74 x 10-7nm