For the wave described by y = 0.02 sin (kx) at t = 0 s, the first maximum at a positive x coordinate occurs where x = 4 m. Where on the positive x axis does the second maximum occur?
a. 20 m
b. 18 m
c. 24 m
d. 28 m
e. 16 m
a
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Uniform Electric Fields: A space probe approaches a planet, taking measurements as it goes. If it detects a potential difference of 6000 MV between the altitudes of 253,000 km and 276,000 km above the planet's surface, what is the approximate electric field strength produced by the planet at 264,500 km above the surface? Assume the electric field strength is approximately constant at these altitudes.
A. 261 N/C B. 0.261 N/C C. 561 N/C D. 493 ?N/C
The scientific discipline of astrobiology is
A) one of the oldest branches of science B) a relatively young branch of science C) a similar age to other fundamental disciplines like physics and chemistry D) a hypothetical branch of science which has yet to be established
A magnetic field is created by an electric charge if the charge is
a. positive. b. negative. c. moving. d. stationary. e. any of the above.
The three colors that comprise the image on a TV screen are
A) red, blue, and yellow. B) red, blue, and green. C) yellow, blue, and green. D) magenta, cyan, and yellow. E) red, green, and yellow.