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Winter 2011 Physics 7A Lecture A/B Quiz 2 Rubric
Question 1
(75% of quiz)
Z (10)  Perfect/Correct
X (9.5)  Correct energy diagrams, correct work = found
Δ
m but didn't give final answers for
m
final
(ice) and m
final
(water).
Also the ones who did give an answer had a small mathematical
mistake.
Y(9)  Small mistakes in Energy diagrams (example: may have E
b
increasing), but work is
correct, and most of these have correct
Δ
m value but again missing m
final
(ice/water).
T(8.7)  Correct energy diagrams and most of the steps follow correctly but there are some
conceptual and mathematical errors which prevented them from getting correct answers.
S(8)  Incorrect energy diagrams (again mostly E
b
increasing), and in addition the work has more
conceptual and mathematical errors.
R(7.7)  Used two different energy diagrams, each with E
th
and E
b
in it (so two E
b
energies
changing in diagrams) wrong.
Q(7.3)  These start fine by calculating correctly E
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 Winter '08
 PARDINI
 Energy, Work

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