Time and Date Stamps (logged): 17:12:20 06-10-2020
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Physics II
General College Physics (Phy 202) Test 1
Completely document your work and your reasoning.
You will be graded on your documentation, your reasoning, and the
correctness of your conclusions.
** Write clearly in dark pencil or ink, on one side of the paper
only. **
Test should be printed using Internet Explorer. If
printed from different browser check to be sure test items have not been cut off. If
items are cut off then print in Landscape Mode (choose File, Print, click on Properties
and check the box next to Landscape, etc.).
Name and Signature of Student
_____________________________
Signed by Attendant, with Current Date and Time:
______________________
If picture ID has been matched with student and name as
given above, Attendant please sign here: _________
Instructions:
- Test is to be taken without reference to text or
outside notes.
- Graphing Calculator is allowed, as is blank paper or
testing center paper.
- No time limit but test is to be taken in one
sitting.
- Please place completed test in Dave Smith's folder,
OR mail to Dave Smith, Science and Engineering, Va. Highlands CC, Abingdon, Va.,
24212-0828 OR email copy of document to dsmith@vhcc.edu,
OR fax to 276-739-2590. Test must be returned by individual or agency supervising test. Test is not to be returned to student after it has been taken. Student may, if proctor deems it feasible, make and retain a copy of the test..
Directions for Student:
- Completely document your work.
- Numerical answers should be correct to 3 significant
figures. You may round off given numerical information to a precision consistent
with this standard.
- Undocumented and unjustified answers may be counted
wrong, and in the case of two-choice or limited-choice answers (e.g., true-false or
yes-no) will be counted wrong. Undocumented and unjustified answers, if wrong, never get
partial credit. So show your work and explain your reasoning.
- Due to a scanner malfunction and other errors some
test items may be hard to read, incomplete or even illegible. If this is judged by
the instructor to be the case you will not be penalized for these items, but if you
complete them and if they help your grade they will be counted. Therefore it is to
your advantage to attempt to complete them, if necessary sensibly filling in any
questionable parts.
- Please write on one side of paper only, and staple
test pages together.
Test Problems:
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Constants
Constants:
| k = 9*10^9 N m^2 / C^2 |
qE = 1.6 * 10^-19 C |
h = 6.63 * 10^-34 J s |
| energy of n=1 orbital in hydrogen atom: -13.6 eV |
k ' = 9 * 10^-7 T m / amp |
atomic mass unit: 1.66 * 10^-27 kg |
| electron mass: 9.11 * 10^-31 kg |
speed of light: 3 * 10^8 m/s |
Avogadro's Number: 6.023 * 10^-23 particles/mole |
| Gas Constant: R = 8.31 J / (mole K) |
proton mass: 1.6726 * 10^-27 kg |
neutron mass: 1.6749 * 10^-27 kg |
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Problem Number 1
There is a small amount of water at the bottom of a sealed container of volume 5.2
liters which is otherwise full of an ideal gas. A thin tube open to the atmosphere extends
down into the water. The system is initially at atmospheric pressure and temperature 12
Celsius.
- If we increase the temperature of the gas until water rises in the tube
to a height of 286 cm, then what is the temperature at that instant?
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Problem Number 2
There is a small amount of water at the bottom of a sealed containerof volume 4.8 liters
which is otherwise full of an ideal gas. A thin tube open to the atmosphere extends
down into the water, and up to a height of 370 cm. The system is initially a pressure that
maintains a column of water that just reaches the top of the tube, and at temperature 276
Celsius.
- If we increase the temperature of the gas until .55 liters of water have
exited at the top of the tube, then what is the temperature?
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Problem Number 3
What is the difference in blood pressure between the head and feet of a person
of height 165 cm?
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Problem Number 4
How much steam at 100 C should we add to 280 grams of water at 60 C and 10 grams
of ice at 0 C to end up with only water at 100 C, assuming that all thermal exchanges take
place within this system?
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Problem Number 5
Use Bernoulli's equation to determine the pressure change as water flows through a full
horizontal pipe from a point where the pipe diameter is .43 meters and velocity 2.1 m/s to a
point where the pipe diameter is .2193 meters.
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Problem Number 6
When a sample of 1.72 kg of a certain material is suspended from a string and immersed in
a liquid whose density is 1.74 kg / liter, the tension in the string is 10.95 Newtons. What is
the buoyant force on the sample?