Determining the change in entropy of the room
A Styrofoam cup holding 101 g of hot water at 1.00 102°C cools to room temperature, 19.4°C. What is the change in entropy of the room? (Neglect the specific heat of the cup and any change in temperature of the room.)
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Assume that the liquid film is thin enough and flat and that the flow is fully developed with zero net flow rate (flow rate Q = 0). Determine the velocity profile u(y) and the pressure gradient dp/dx.
The average yearly snowfall in Chillyville is Normally distributed with a mean of 55 inches. If the snowfall in Chillyville exceeds 60 inches in 15% of the years, what is the standard deviation?
Iron (III) ions, calcium ions, and lead (II) ions are all in asolution. You want to separate the ions so that you have each onein solid form without the other ions
A study found correlation r=.061 between the sex of a worker and his or her income. You conclude that
There is a linear relationship between the number of chirps made by the striped ground cricket and the air temperature. A least-squares fit on some data collected by a biologist gives the model
A carbon steel with 1.13 wt % C is given the following heat treatment: (i) quenched instantaneously to 200oC, (ii) held for 1 day, and (iii) cooled slowly to room temperature. What is the resulting microstructure?
The decomposition of hydrogen peroxide is catalyzed by iodideion. The catalyzed reaction is thought to proceed by a two-step mechanism:
A nutritionist wants to study the effect of storage time (6,12, and 18 months) on the amount of vitamin C present in freeze dried fruit when stored for these lengths of time.
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