Models of the Big Bang that include inflation predict that the overall geometry of the universe should be "flat" (in spacetime). This prediction
A) agrees with data found by studying the cosmic microwave background.
B) has been verified by observing the paths of light coming from distant galaxies.
C) has been shown to be incorrect by study of the expansion pattern of the universe.
D) cannot be tested at this time.
A) agrees with data found by studying the cosmic microwave background.
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What kind of planets are most easily detected using the Doppler method?
A) high mass planets far from their host star B) low mass planets far from their host star C) low mass planets close to their host star D) high mass planets close to their host star E) planets that have been ejected from their systems
New York is east of Toledo but in the same time zone. When is sunset in Toledo compared to sunset in New York?
What will be an ideal response?
A resistor is made out of a long wire having a length L. Each end of the wire is attached to a terminal of a battery providing a constant voltage V0
A current I flows through the wire. If the wire were cut in half, making two wires of length L/2, and both wires were attached to the battery (the end of both wires attached to one terminal, and the other ends attached to the other terminal), what would be the total current flowing through the two wires? A) 4I B) 2I C) I D) I/2 E) I/4
When uranium-238 (Z = 92) is bombarded with a neutron, it can change into
a. uranium-237 b. uranium-239 c. protactinium-239 (Z = 91) d. neptunium-239 (Z = 93) e. none of the above