In strength, the magnetic fields of Uranus and Neptune are:
A) very different, with flopped over Uranus having no field, and Neptune a strong one.
B) similar, with both about 100 times stronger than our own.
C) even stronger than that of Jupiter.
D) perfect fits for the Dynamo theory.
E) like Jupiter and Saturn, due to mantles of liquid metallic hydrogen.
B
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Our Sun is a star of spectral type
A) F. B) M. C) G. D) S.
Monochromatic light from a He-Ne laser (? = 632.8 nm) is incident on a diffraction grating containing 5000 lines/cm. Determine the angle of the first-order maximum.
A. 18.4° B. 39.2° C. 14.6° D. 27.7° E. 13.9°
Determine the temperature associated with the radiation emitted from a black body radiator such that its color appears to be (a) Red, (b) Blue, (c) Green, (d) Yellow, and (e) Purple.
What will be an ideal response?
A string is wrapped around a pulley with a radius of 2.0 cm and no appreciable friction in its axle. The pulley is initially not turning
A constant force of 50 N is applied to the string, which does not slip, causing the pulley to rotate and the string to unwind. If the string unwinds 1.2 m in 4.9 s, what is the moment of inertia of the pulley? A) 0.17 kg?m2 B) 17 kg?m2 C) 14 kg?m2 D) 0.20 kg?m2 E) 0.017 kg?m2