* echo
<h2>Results</h2>
The results of your exam are displayed below.
Depending on what you've set the <tt>SHOW</tt> level to be
you'll see various amounts of grading information.  For example,
<tt>SHOW=4</tt> displays the correct answer for questions you
have incorrectly answered and adds one line of hints.  Higher values of
<tt>SHOW</tt> will confusingly include correct answers to both forms of the
question.
*let sshow=show
*set show 2
<p>
This was a <b>timed test</b> you spent
*let timet=secnds-time0
*if (timet.lt.0) then
*let timet=timet+24*3600
*endif
*write timet/60 f5.1
minutes on it.<hr>
*let show=sshow
* noecho
1 b a
Work = <b>F&#183;s</b> and Work-Energy Theorem

2 a d
Use conservation of energy! PE = <em>mgh</em>;  KE = &#189;&nbsp;<em>mv</em><sup>2</sup>.

3 d c
Inelastic collisions just conserve momentum; elastic collisions conserve both KE and momentum.

4 c a
Pendulum period depends mostly on <em>L</em> and <em>g</em>; for "small" swings it is independent of amplitude.

5 d a

* echo
<p><hr><p>
<h3>Summary Results</h3>
Out of the five
questions, you answered
* let ntry=5-(nblank+n_blank-5)
* write ntry i3
questions and got
* write nright+n_right i3
correct -- 
* if (ntry.gt.0) then
that's
* write nint((nright+n_right)/ntry*100) i3
percent correct overall.
* else
if you want to get some correct, you
really should try to answer some!
* endif

<p>On the real exam, you should be sure to guess an answer
for each question. However, on this web exam I give you the
expected &#188; of a correct answer per blank answer.
Thus <em>if you have no idea</em> what the correct answer is
leaving the web answer form blank does no harm on average.
Your expected score (including blanks) is:
* let score=nright+n_right+(nblank+n_blank-5)*.25
* write score f5.1
* log score '6Hscore=,f5.1'

<hr>
*show