Consider two containers with the same volume and temperature. Container One holds "dry" air--a mixture of nitrogen and oxygen. Container Two holds "moist" air. The "moist" air has the same ratio of nitrogen to oxygen molecules, but also contains water vapor. According to the ideal gas law, if the pressures are equal, the weight of the gas in Container One will be
a. lighter than the gas inside the second container.
b. equal to the weight of the gas in the second container.
c. heavier than the gas inside the second container.
d. all the above are incorrect because the pressures cannot be equal.
c
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A Young's double-slit experiment is performed, and the distance between bright fringes is d0 . If the experiment is repeated, this time under water, what is the relationship between the new distance between bright fringes, dw, and the original distance, d0?
a. dw < d0 b. dw = d0 c. dw > d0 d. Not enough information
An iron block of density ?Fe and of volume l3 is immersed in a fluid of density ?fluid. The block hangs from a scale which reads W as the weight. The top of the block is a height h below the surface of the fluid. The correct equation for the reading of the scale is
a. W = (?Fe ? ?fluid)ghl2. b. W = (?fluid ? ?Fe)gl3. c. W = (?Fe ? ?fluid)gl3. d. W = (?Fe + ?fluid)ghl2. e. W = (?Fe + ?fluid)gl3.
A spring-driven dart gun propels a 10. g dart. It is cocked by exerting a force of 20. N over a distance of 5.0 cm. With what speed will the dart leave the gun, assuming the spring has negligible mass?
What will be an ideal response?
During snow fall, the surrounding air is
A) cooled. B) warmed. C) both of these D) neither of these