Suppose a balloon is filled so that its volume is 2.00 L when the pressure is 1.10 atm and the temperature is 300 K. What volume will it occupy if it rises to an elevation where the pressure is 418 mm Hg and the temperature is 200 K?
A) 3.30 L
B) 2.67 L
C) 0.375 L
D) 0.303 L
B
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The resultant of a pair of vectors is always
A. equal to either vector when the angle is 45°. B. less than either vector. C. greater than either vector. D. none of the above
Proven reserves of oil are determined by
A) the total of all oil deposits that have been mined. B) an estimate of oil deposits not yet discovered. C) deposits that are possible to mine and be distributed under current economic and technological conditions D) the estimated remaining deposits of the resources E) identified areas of possible fossil fuels.
The element uranium (U, atomic no. = 92) often has 146 (or more) neutrons, but it will still undergo radioactive decay. Which statement might best describe why?
A. The force is strong with U, but tainted with the dark side it is. B. The attractive force of the nucleons has a limited range. C. The isolated neutron is not stable and will undergo spontaneous transformation into a proton and an electron. D. both A and B E. none of the above
Interglacial–glacial period climate cycles are often referred to as appearing saw-toothed, with an abrupt change followed by a more gradual change. When do we see an abrupt change: when going from interglacial to glacial times or when going from glacial to interglacial times? When do we see a gradual change?
What will be an ideal response?