These two diagrams contrast the habitable zones around the Sun and around a much lower mass star. They are shown to scale. Based on what you see here, what can you conclude about the possibility of finding life around the lower-mass star compared to finding life around a Sun-like star?
A) There is a higher probability that an orbiting planet will be in the habitable zone for a
Sun-like star than for a lower-mass star.
B) Sun-like stars must always have more life around them than lower-mass stars.
C) A Sun-like star always has at least two habitable planets, while a lower-mass star may have only one habitable planet.
D) There is virtually no chance of finding life around a lower-mass star.
A) There is a higher probability that an orbiting planet will be in the habitable zone for a
Sun-like star than for a lower-mass star.
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The CFC propellants used in aerosol cans are chemically inert gases. This inertness leads to problems with stratospheric ozone because
A) inert gases do not travel far in the atmosphere, so they are likely to react before rising very high. B) inert gases are especially likely to react chemically with the atmosphere. C) inert gases can drift upward for great distances without being broken down by the atmosphere. D) inert gases are especially attracted to ozone due to the fact that ozone is so highly reactive. E) inert gases are especially attracted to other inert, or nonreactive, gases such as ozone.
If I = 2.0 A in the circuit segment shown below, what is the potential difference VB ? VA?
a.
+10 V
b.
?20 V
c.
?10 V
d.
+20 V
e.
+30 V
Which classes of stars with large habitable zones probably don't last long enough for life to evolve to use them?
What will be an ideal response?
A 600-kg car is going around a banked curve with a radius of 110 m at a speed of 27.5 m/s. What is the appropriate banking angle so that the car stays on its path without the assistance of friction?
A) 35.0° B) 13.5° C) 33.8° D) 56.2° E) 60.9°