The Sun's habitable zone ________
A) extends from some place a little beyond the orbit of Venus to some place near the orbit of Mars
B) extends from the orbit of Earth to the orbit of Jupiter
C) consists only of Earth, since Earth is the only planet known to be inhabited
D) extends from just beyond the orbit of Mercury to just beyond Earth's orbit
A
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Capacitors in Combination: You have three capacitors with capacitances of 4.00 ?F, 7.00 ?F, and 9.00 ?F. What is the equivalent capacitance if they are connected (a) in series and (b) in parallel?
What will be an ideal response?
Fusion is often called a "thermonuclear reaction" because
A) it is a nuclear reaction that consumes, or uses, more thermal energy than it creates. B) it is a process that converts thermal energy into nuclear energy. C) it is a nuclear reaction that is self-sustaining a sufficiently high temperatures. D) it produces nuclear energy. E) it is a nuclear reaction that produces more total energy than it consumes.
An ideal Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat to the room at the rate of 47 kJ per second and maintains the room at a temperature of 293 K when the outside temperature is 237 K
The power requirement to run the heat pump under these operating conditions is closest to A) 9000 W. B) 7100 W. C) 20,000 W. D) 15,000 W. E) 11,000 W.
Projectile Motion: A shell is launched with a velocity of 100 m/s at an angle of 30.0° above horizontal from a point on a cliff 50.0 m above a level plain below. How far from the base of the cliff does the shell strike the ground? There is no appreciable air resistance, and g = 9.80 m/s2 at the location of the cliff.
Fill in the blank(s) with the appropriate word(s).