Liquid metallic hydrogen is found in the interior(s) of
a. Jupiter.
b. Saturn.
c. Jupiter and Saturn.
d. neither Jupiter nor Saturn.
c
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How did the relatively smooth regions on the Moon known as the lunar maria form?
A) Large impacts fractured the Moon's lithosphere, allowing lava to fill the impact basins. B) The early bombardment created heat that melted the lunar surface in the regions of the maria. C) Volatiles escaping from the Moon's interior heated and eroded the surface in the regions of the maria. D) The giant impact that created the Moon left smooth areas that we call the maria. E) The maria are the result of gradual erosion by micrometeorites striking the Moon.
A 35.0-g cube of ice, initially at 0.0°C, is dropped into 180.0 g of water in an 70.0-g aluminum container, both initially at 35.0°C. What is the final equilibrium temperature? (Specific heat for aluminum is 900 J/kg/°C, the specific heat of water is 4 186 J/kg/°C, and Lf = 3.33 × 10^5 J/kg.)
a. 35.1°C b. 17.6°C c. 8.79°C d. 26.4°C e. 30.8°C
An uncharged spherical conducting shell surrounds a charge ?q at the center of the shell. Then charge +3q is placed on the outside of the shell. When static equilibrium is reached, the charges on the inner and outer surfaces of the shell are, respectively,
a. +q, ?q. b. ?q, +q. c. +q, +2q. d. +2q, +q. e. +3q, 0.
A hydrogen atom makes a transition from the n = 8 to the n = 3 state. The wavelength of the emitted photon is closest to which one of the following values? (c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A) 9.57 × 10-7 m B) 1.13 × 10-6 m C) 3.12 × 10-7 m D) 4.52 × 10-6 m E) 6.34 × 10-7 m