Two long parallel wires separated by 5.0 mm each carry a current of 60 A. These two currents are oppositely directed. What is the magnitude of the magnetic field at a point that is between the two wires and 2.0 mm from one of the two wires?
A. 2.0 mT
B. 10 mT
C. 8.0 mT
D. 1.6 mT
E. 7.2 mT
Answer: B
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A. positrons B. quarks C. leptons D. gluons E. muons
Gamma rays are emitted by way of
A) ionizing radiation. B) transitions within an atom's innermost electrons. C) transitions within the atomic nucleus. D) none of the above
A proton, mass 1.67 × 10^-27 kg and charge +1.6 × 10^-19 C, moves in a circular orbit perpendicular to a uniform magnetic field of 0.50 T. Find the time for the proton to make one complete circular orbit
a. 8.7 × 10^-8 s c. 9.8 × 10^-7 s b. 1.3 × 10^-7 s d. 4.3 × 10^-8 s
Two cooks standing side by side in a restaurant pull their beaters out of the dough at the same instant. A glob of dough flies off each beater. Each glob lands on the top of a tin the same horizontal distance away and at its initial height. However, one lands later than the other. The explanation is that they left the beaters at angles ?1 and ?2 such that:
A.
B.
.C.
.D.
E.