Climate models predict that due to the melting of the polar ice caps, sea levels by the end of this century
A) will remain stable due to increased evaporation into the Earth's atmosphere
B) may rise by several tens of meters
C) will actually fall by several inches due to increased evaporation into the Earth's atmosphere
D) may rise by several meters
D
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Capacitors in Combination: Four 16-?F capacitors are connected in combination. What is the equivalent capacitance of this combination if they are connected(a) in series?(b) in parallel?(c) such that two of them are in parallel with each other and that combination is in series with the remaining two capacitors?
What will be an ideal response?
Annie Jump Cannon became famous for
A) developing our modern system for classifying stars. B) discovering the planet Uranus. C) discovering the planet Neptune. D) building the world's largest telescope.
In the Lighthouse Model,
A) the star literally turns on and off like a lighthouse beacon. B) all pulsars must have their poles pointed directly toward us. C) if the beam sweeps across us, we will detect a pulse of radiation. D) the period of pulsation must speed up as the neutron star continues collapsing. E) the period of pulsation slows down due to the drag of the remnant on its field.
Three originally uncharged infinite parallel planes are arranged as shown. Then the upper plate has surface charge density ? placed on it while the lower plate receives surface charge density ??. The net charge induced on the center plate is
A. 0. B. ??/2. C. +?/2. D. ??. E. +?.