Velma passes Mort at a high speed. Velma and Mort each have identical light-clocks. Mort and Velma both observe both clocks to "tick" simultaneously at 12 noon on both clocks. Velma observes that Mort's next tick occurs
A) before or after or at the same time as her own tick, depending on Velma's precise speed relative to Mort.
B) at the same time as the tick on her clock.
C) before her own clock ticks.
D) after her own clock ticks.
E) only when the moon is full.
D
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Air at a temperature of 32° F has a relative humidity of 60%. If the temperature of the same air rises to 40° F, the relative humidity
a. stays the same b. increases c. decreases d. cannot be determined
Hydrogen atoms in palladium form a(n) _____________solid solution.
Fill in the blank(s) with the appropriate word(s).
Which space observatory uses the transit method to detect extrasolar planets?
a. Hubble b. Kepler c. Spitzer d. Chandra e. Voyager
Which statement best describes what used to be called the solar neutrino problem?
A) Theoretical models predict that neutrinos should be produced in the Sun, but no neutrinos had ever been observed to be coming from the Sun. B) Solar neutrinos were detected in fewer numbers than predicted by theoretical models. C) Theoretical models did not predict the production of neutrinos by the Sun, yet solar neutrinos were detected. D) Theoretical models predicted that all solar neutrinos should be destroyed before they arrive at Earth, yet neutrinos were detected on Earth. E) The neutrinos that were being detected from the Sun had much smaller masses than theoretical models could account for.