The first living organisms probably resembled
A) single-celled eukaryotes
B) multicellular eukaryotes
C) single-celled prokaryotes
D) multicellular prokaryotes
C
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The lunar month is longer than the sidereal month because
A) the Moon completes the cycle of lunar phases before it completes a full orbit around Earth. B) the Moon has to complete more than one full orbit around Earth to complete the cycle of lunar phases. C) the Moon orbits Earth faster than Earth orbits the Sun. D) the Moon orbits Earth faster than Earth rotates. E) the lunar month is based on the Moon's orbit, while the sidereal month is based on Earth's orbit.
Which of the following protogalactic clouds is most likely to form an elliptical galaxy?
A) a very low-density cloud with very little angular momentum B) a dense cloud with very little angular momentum C) a low-density cloud with quite a bit of angular momentum D) a very massive cloud with any density and a lot of angular momentum
Capacitance of capacitors depends upon
A) the material between the conductors. B) the geometry of the conductors. C) the space between the conductors. D) all of these answers. E) none of these answers.
The pupil of a cat's eye narrows to a slit width of 0.5 mm in daylight. What is the angular resolution of the cat's eye in daylight (? = 500 nm)?
a. 0.01 rads b. 10?5 rads c. 10?3 rads d. 10?4 rads e. 0.1 rads