Reference no: EM132509153
Question 1: An Acme furnace was tested 45 days ago in your hometown to determine the heat generated, expressed in thousands of British thermal units per cubic foot of furnace volume at varying temperatures. The results are shown in the table.
Heat released, H, 103 Btu/ft3 Temperature, T,F
0200 172
0.600 241
2.00 392
4.00 483
8.00 608
20.00 812
40.00 959
80.00 1395
(a) Plot the data on log-log paper with temperature as the independent variable.
(b) Using the method of selected points, determine the equation that best fits the data.
(c) Using computer-assisted methods, plot the graph and determine the equation of the line.
Question 2: The density of water vapor in air changes rapidly with the change in air temperature. Data were recorded from an experimental test and are shown in the following table.
Air Temperature, T, It
|
Water Vapor Density, 0, kg/m1
|
400
|
0.55
|
450
|
0.49
|
500
|
0.44
|
550
|
0.39
|
600
|
0.36
|
650
|
0.34
|
700
|
0.33
|
750
|
029
|
800
|
0.27
|
(a) Plot the data on linear, semilog, and log-log paper with the air temperature as the independent variable.
(b) By the method of selected points, find the best equation relating water vapor density to air temperature.
(c) Repeat parts (a) and (b) using a computer-assisted method.