Two long parallel wires carry currents of 10 A in opposite directions. They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire and 60 cm from the other?
A)
1.5 × 10-6 T
B)
3.3 × 10-6 T
C)
6.7 × 10-6 T
D)
3.3 × 10-5 T
E)
6.7 × 10-5 T
C
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A) a high-energy electromagnetic wave. B) an electron that has been ejected from a metal surface by electromagnetic radiation. C) a particle-like quantum of radiation. D) one of the two types of nuclear particles. E) the "anti-particle" to the electron.
A 2.00-m long metal wire is formed into a square and placed in the horizontal xy-plane. A uniform magnetic field is oriented at 30° above the horizontal with a strength of 0.344 T. What is the magnetic flux through the square due to this field?
A) 0.0745 T ? m2 B) 0.172 T ? m2 C) 0.0430 T ? m2 D) 0.298 T ? m2
At the peak of its motion, the acceleration of a projectile is zero
Indicate whether the statement is true or false
A horizontal uniform meter stick supported at the 50-cm mark has a mass of 0.50 kg hanging from it at the 20-cm mark and a 0.30 kg mass hanging from it at the 60-cm mark. Determine the position on the meter stick at which one would hang a third mass of 0.60 kg to keep the meter stick balanced
a. 74 cm b. 70 cm c. 65 cm d. 86 cm e. 62 cm