If we eventually find life on Mars, we could tell if panspermia may have occurred between Mars and Earth if
A) the biochemistry of Martian life is very different than life on Earth
B) the biochemistry of Martian life is very similar to life on Earth
C) Martian life shows evidence for natural selection
D) Martian life is cellular
B
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In a two-slit experiment, monochromatic coherent light of wavelength 600 nm passes through a pair of slits separated by 2.20 × 10-5 m. At what angle away from the centerline does the second dark fringe occur?
A) 4.70° B) 3.51° C) 3.94° D) 1.17° E) 2.34°
_________ stresses result from strains that are not due to applied external forces.
Fill in the blank(s) with the appropriate word(s).
What do we mean when we talk about the Milky Way in our sky?
A) The patchy band of light that outlines the plane of the Milky Way Galaxy as seen from Earth. B) The whitish patch of light we see when we look toward the center of the Milky Way Galaxy. C) The spiral-shaped galaxy in which we live. D) The bright stars of the constellations that lie along the ecliptic in our sky.
Consider a situation where a skater pulls her arms inward, causing her rotation rate to speed up. Linear momentum
a. is definitely conserved b. is definitely not conserved c. may or may not be conserved d. none of the above