In order to keep its food hot, a restaurant will place it under which type of lamp?
a. infrared
b. visible light
c. ultraviolet
d. x-ray
a
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The diagram below shows the position of a long straight wire perpendicular to the page and a set of directions labeled A through H.
When the current in the wire is directed up out of the page, the direction of the magnetic field at point P is
A. A. B. B. C. C. D. D. E. E.
Nuclear Magnetic Resonance, NMR, is more commonly referred to as
A) MRI. B) NRA. C) CT-scan. D) MRT. E) CAT.
A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?
A) zero B) 0.41 m?N C) 0.47 m?N D) 0.52 m?N E) 0.59 m?N
The Moon completes one orbit around Earth about every
a. 29.5 days. b. 7 days. c. 365 days. d. sidereal day.