#$&*
Phy 202
Your 'test taken' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** test taken **
Phy 202: Test 1
** **
July 16, 2012 (start time = approx. 5:50 PM; finish time = approx. 8:40 PM)
** **
The Testing Center of the Portsmouth campus of Tidewater Community College
** **
Regular mail, fax, or other: inter-office mail (not sure which -- sorry about that)
** **
There seems to have been a problem with Question 6 (the last one on the test).
The question was something to the effect of A vessel having volume X and sealed with a stopper is filled almost entirely with an ideal gas at 295 degC; the rest of its volume is occupied by a small amount of water at the bottom. A tube runs through the stopper and down into the water. How high will the water rise in the tube if the gas's temperature is increased [sic] to 0 degC?
I couldn't understand this, because a) a temperature change from >500 K to 273.15 K is not an increase; b) the confusion couldn't have resulted from leaving a negative sign off the temperature, because -295 degC would be below absolute zero; c) even if I were to read decrease in place of increase, there's no mention of what pressure the ideal gas exerts / is under, what the ambient temperature is, what the ambient pressure is, what if any level the water has risen to already, or anything like that; and d) if we're to assume that the water in the tube is currently level with the water in the container, cooling the gas wouldn't raise the water in the tube any and might even *lower* it, but we don't have any information re: the depth of the water or the specific dimensions of the container, so we can't answer even how much it would have been lowered.
If you can figure out what part of the problem is supposed to be different, please send along the revised problem and I'll be happy to solve it for you (or at least try).
Thanks again!
@&
If there is a problem with a test question I either count it, if the student's solution is good enough to raise the overall score, or simply disregard it.
*@
@&
I'll look forward to receiving your test, and also (hopefully) resolving any issues that might have arisen for your proctors.
*@