Both Jupiter and Saturn
a. have liquid metallic hydrogen in their interiors.
b. have rings.
c. emit more energy than they absorb from the Sun.
d. have belt and zone circulation.
e. All of the other choices are correct.
e
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Due to increasing amounts of terrestrial radio noise, in the future SETI telescopes may be placed
A) on the tops of tall mountains B) in near-Earth orbit C) on the far side of the Moon D) in remote desert locations
A circular loop (radius = 0.50 m) carries a current of 3.0 A and has unit normal vector of 
/3. What is the x component of the torque on this loop when it is placed in a uniform magnetic field of 
T?
A. 4.7 N ? m B. 3.1 N ? m C. 19 N ? m D. 9.4 N ? m E. 12 N ? m
Eons are divided first into
a. eras. b. periods. c. millennia. d. epochs.
A single slit is illuminated at normal incidence with a parallel beam of light having a wavelength of 411 nm. The entire central band of the diffraction pattern is observed at ±90°
The illumination is now replaced by a nonrelativistic beam of electrons, each having a kinetic energy of 980 eV. When this beam hits the slit at normal incidence, at what angle will the first minimum of the electron diffraction pattern occur? (h = 6.626 × 10-34 J • s, mel = 9.11 × 10-31 kg, 1 eV = 1.60 × 10-19 J) A) 0.095 mrad B) 0.071 mrad C) 0.046 mrad D) 0.12 mrad E) 0.14 mrad