A rectangular loop of wire measures 1.0 m by 1.0 cm. If a 7.0-A current flows through the wire, what is the magnitude of the magnetic force on the centermost 1.0-cm segment of the 1.0-m side of the loop? (?0 = 4? × 10-7 T ? m/
A)
A) 9.8 × 10-6 N
B) 7.8 × 10-7 N
C) 9.8 × 10-8 N
D) 4.9 × 10-6 N
A
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A) spectroscopy (taking a spectrum) B) imaging (taking a picture) C) time monitoring (measuring how the amount of light changes with time)
What organic compound is represented by a hexagon with a circle inside?
a. Cyclohexane b. Cycloheptane c. Benzene d. Ethanol e. Methane
The Doppler shift is used to find
A) astrometric binaries. B) spectroscopic binaries. C) photometric binaries. D) visual binaries. E) eclipsing binaries.
What is electric current?
a. The same thing as a charge. b. The electrical energy from a generator. c. The electrical energy from by a battery. d. An abrupt and brief electrical discharge, such as a spark. e. A continuous flow of charge.