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Steam at a temperature of 623 K is flowing through a pipe with an outer diameter of 100 mm. The pipe is insulated with 20-mm thick mineral wool, the average thermal conductivity of which is 0.055 W/m.K. Determine the outside surface temperature of mineral wool if the ambient air temperature is 300 K. Assume the hot-surface temperature of the mineral wool is the same as that of the flowing steam and the value of the surface coefficient of the insulating material is 30 W/m2.K.
The market supply curves and market demand curves for books are given as follows:
Supply curve: P = 0.000002Q
Demand curve: P = 11 – 0.00002Q
The short-run marginal cost curve: MC = 0.1 + 0.0009Q
The short-run equilibrium level of output is
If the speed of the bob at the lowest point A is 0.84 m/s, what is its KE at this point?
Market economy is a necessary evil. Discuss
Write a function in this file called nine_lines that uses the function three_lines (provided below) to print a total of nine lines.
Now add a function named clear_screen that uses a combination of the functions nine_lines, three_lines, and new_line (provided below) to print a total of twenty-five lines. The last line of your program should call first nine_lines and then the clear_screen function.
The function three_lines and new_line are defined below so that you can see nested function calls. Also, to make counting “blank” lines visually easier, the print command inside new_line will print a dot at the
Under what circumstances may the demand for the commodity be inelastic?
Discuss the view that a market economy is always preferable to a planned economy.
Use the bissection method to approximate the root of f(x)=2x^2-1 in the interval (0,1). Let ε =0.1be the margin of error of approximation.0.1be the margin of error of approximation.
The market supply curves and market demand curves for books are given as follows:
Supply curve: P = 0.000002Q
Demand curve: P = 11 – 0.00002Q
The short-run marginal cost curve: MC = 0.1 + 0.0009Q
The equilibrium quantity of books is
II. Describe the spontaneity and entropy of the processes.
1. Formation of CO2 and H2O through the reaction below.
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)
2. Sublimation of naphthalene balls as represented by this equation:
C10H8(s) → C10H8(g)
3. Formation of H2O from H2 and O2 2H2(g) + O2(g) → 2H2O(l)
#340153 on Dec 2023