Question

1. Plot the measured Pressure (in psi) versus Temperature (in °C) on the supplied graph paper. The temperature scale should extend from -360°C to +140°C. The pressure scale should extend from 0 to 19 psi. Make sure to include horizontal and vertical error bars when possible. Part of the grade is reserved for good graphing techniques and you must plot the graph manually for this experiment. An example of graphical error propagation is attached at the end of the page. 2. Draw a best fit straight line through the data. Determine and record the horizontal intercept of the best fit line directly from your graph. Be sure to include units. Horizontal intercept: 3. Estimate the uncertainty in the horizontal intercept, given by $\delta_{intercept} = \frac{maximum \ intercept - minimum \ intercept}{2}$ Be sure to include units $\delta_{intercept} = $ 4. Absolute zero is the temperature at which the pressure P = 0; that is, the horizontal intercept. Write your value for absolute zero in Celsius degrees in proper form: Absolute zero (°C): 5. Should the value of the horizontal intercept depend on whether you plot the pressure in lb/in² (psi) or in Pa? State your reason(s).

          1. Plot the measured Pressure (in psi) versus Temperature (in °C) on the supplied graph paper. The
temperature scale should extend from -360°C to +140°C. The pressure scale should extend from 0 to
19 psi. Make sure to include horizontal and vertical error bars when possible. Part of the grade is
reserved for good graphing techniques and you must plot the graph manually for this experiment.
An example of graphical error propagation is attached at the end of the page.
2. Draw a best fit straight line through the data. Determine and record the horizontal intercept of the
best fit line directly from your graph. Be sure to include units.
Horizontal intercept:
3. Estimate the uncertainty in the horizontal intercept, given by
$\delta_{intercept} = \frac{maximum \ intercept - minimum \ intercept}{2}$
Be sure to include units
$\delta_{intercept} = $
4. Absolute zero is the temperature at which the pressure P = 0; that is, the horizontal intercept. Write
your value for absolute zero in Celsius degrees in proper form:
Absolute zero (°C):
5. Should the value of the horizontal intercept depend on whether you plot the pressure in lb/in² (psi)
or in Pa? State your reason(s).

1. Plot the measured Pressure (in psi) versus Temperature (in °C) on the supplied graph paper. The
temperature scale should extend from -360°C to +140°C. The pressure scale should extend from 0 to
19 psi. Make sure to include horizontal and vertical error bars when possible. Part of the grade is
reserved for good graphing techniques and you must plot the graph manually for this experiment.
An example of graphical error propagation is attached at the end of the page.
2. Draw a best fit straight line through the data. Determine and record the horizontal intercept of the
best fit line directly from your graph. Be sure to include units.
Horizontal intercept:
3. Estimate the uncertainty in the horizontal intercept, given by
δintercept = (maximum intercept - minimum intercept)/(2)
Be sure to include units
δintercept =
4. Absolute zero is the temperature at which the pressure P = 0; that is, the horizontal intercept. Write
your value for absolute zero in Celsius degrees in proper form:
Absolute zero (°C):
5. Should the value of the horizontal intercept depend on whether you plot the pressure in lb/in² (psi)
or in Pa? State your reason(s).

Added by Andrew W.

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