A wire of a certain length is carrying a current of 2.0 A. It is placed at an angle of 60° with respect to a magnetic field of strength 0.20 T. If the wire experiences a force of 0.40 N, what is the length of the wire?
A) 1.0 m
B) 1.2 m
C) 1.4 m
D) 1.6 m
E) 1.8 m
B
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The planet with the Great Dark Spot is
a. Jupiter. b. Saturn. c. Uranus. d. Neptune.
When the adjustable mirror on the Michelson interferometer is moved 20 wavelengths, how many fringe pattern shifts would be counted?
A. 5 B. 10 C. 20 D. 40 E. 80
Why is Jupiter denser than Saturn?
A) The extra mass of Jupiter compresses its interior to a greater extent than that of Saturn. B) It is made of a different composition than Saturn, including a higher proportion of hydrogen compounds and rocks. C) Its core is much larger than Saturn's. D) It has a greater proportion of helium to hydrogen compared to Saturn. E) Scientists do not know why this is so.
Which of these are nearly 90 degrees to the orbit plane of Uranus
a. Uranus' equator b. The orbit planes of its major satellites c. The orbit plane of its rings d. All of the above.