Using the assumption that it takes several billion years for complex life to evolve in a stable environment, it is most likely that the stars with inhabited planets are:
A) G and K main sequence stars.
B) white dwarf stars.
C) A and B main sequence stars.
D) neutron stars.
A
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Graphical Analysis: The figure shows a graph of the velocity of an object as a function of time. What is the average acceleration of the object over the following time intervals?(a) From t = 0 s to t = 5.0 s(b) From t = 0 s to t = 8.0 s
What will be an ideal response?
Give evidence that magnetism plays a role in planetary nebula formation
What will be an ideal response?
A sphere of surface area 1.25 m2 and emissivity 1.0 is at a temperature of 100°C. At what rate does it radiate heat into empty space? (? = 5.67 × 10-8 W/m2 ? K4)
A) 7.1 W B) 0.71 mW C) 1.4 kW D) 9.9 mW E) 3.7 W
Layered sedimentary rocks and foliated metamorphic rocks share similarities because
A) most foliated metamorphic rocks are derived from layered sedimentary rocks. B) they both are formed layer upon layer. C) the minerals in these two types of rocks form in parallel planes. D) both rock types are subjected to compressive forces.