Which planet(s) have an atmosphere that consists mostly of carbon dioxide?
A) Venus and Mars
B) Venus, Earth, and Mars
C) Venus only
D) Mars only
A) Venus and Mars
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What would happen if a white dwarf gained enough mass to reach the 1.4 solar-mass white dwarf limit?
A) The white dwarf would explode completely as a white dwarf supernova. B) The white dwarf would collapse in size, becoming a neutron star. C) The white dwarf would undergo a nova explosion. D) The white dwarf would collapse to become a black hole.
If you heat a gas so that collisions are continually bumping electrons to higher energy levels, when the electrons fall back to lower energy levels the gas produces
A) thermal radiation. B) radio waves. C) an absorption line spectrum. D) an emission line spectrum. E) X-rays.
A very small object carrying -6.0 ?C of charge is attracted to a large, well-anchored, positively charged object
How much kinetic energy does the negatively charged object gain if the potential difference through which it moves is 3.0 mV? (k = 1/4??0 = 8.99 × 109 N • m2/C2) A) 18 nJ B) 0.50 kJ C) 0.50 J D) 6.0 ?J
The gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline-air mixture, the electric field must reach a value of 3 × 106 V/m. What minimum voltage must be supplied by the ignition circuit when starting the car?
What will be an ideal response?