Calculate the final equilibrium temperature
A 30-kg aluminum block initially at 140 C is brought into contact with a 40-kg block of iron at 60 C in an insulated enclosure. Determine the final equilibrium temperature and the total entropy change for this process.
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The Journal of American Medical Association reported on an experiment intended to see if the drug Prozac could be used as a treatment for the eating disorder aneorexia nervosa. Subjects which were women treated for anorexia were divided into two g
Consider the isothermal expansion of 4.50 mol of an ideal gas at 450 K from an initial pressure of 12.0 bar to a final pressure of 2.75 bar.
Estimate the critical value of t for a 99% confidence interval with degrees of freedom (df) equal to 102.
Ignoring the heat transfer, changes in potential energy, and the kinetic energy in inlet, calculate (a) The power output from this turbine, in kW. (b) The cross-section area of the exit, in m2.
In a premlinary test of the Microsort method of gender selection 14 couples were treated and 1.3 of them had baby girls. If we plan to use the normal approximation to the binomial distrubtion for finding the probability of exactly 13 girls assumin
A piston-cylinder device initially contains 0.07 m3 of nitrogen gas at 130 kPa and 120 oC. The nitrogen is now expanded polytropically to a state of 100 kPa and 100 oC.
These capacitors are then disconnected from their batteries, and the positive plates are now connected to each other and the negative plates are connected to each other. What will be the potential difference across each capacitor?
Assume ends of bar in 5-7 have been kept constanst at 100 degrees C for a long time. Then at some instant t=0 the temperature at x=L is suddenly changed to 0 degree C and kept there.
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