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The cylindrical tank in a food-processing plant is filled with a concentrated sugar solution having an initial density of . Water is piped into the tank at at and mixed with the sugar solution. If an equal flow of the diluted solution exits at , find the amount of water that must be added to the tank so that the density of the sugar solution is reduced by of its original value.
Light falling on a metal surface causes electrons to be emitted from the metal by the photoelectric effect. As we increase the of this light, but do not vary anything else
A. The number of electrons emitted from the metal increases.
B. The maximum speed of the emitted electrons increases.
C. The maximum speed of the emitted electrons does not change.
D. The work function of the metal increases.