Taking
the Physics Final Exam
Part
A, B-1
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Read the
question carefully.
Look for terms like Aconstant
velocity,@
Aat
rest,@
Africtionless.@
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Examine the units
in the answer. Often they give away
the equation to use. Keep your reference
table in mind on every question.
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Not all information
given is vital to solving the problem. Be
careful of useless data.
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Read the
y and x axes carefully on questions
with graphs. The slope and area may
have meanings, such as finding a constant k (slope) or a magnitude
of a vector or scalar (area).
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Answer the exam=s
question, not yours!
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Carefully read the
directions for each question.
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Keep your reference
table in mind on every question. Rearrange
formulas correctly and do a unit check.
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Be sure you=ve
answered all questions.
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Plot data on a graph
carefully. Check your grids for correct
spacing and label the axes if required. Is
your line a Abest
fit@
line if that is required?
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If a slope is calculated,
be sure your slope has UNITS! Also,
be sure to indicate if your slope is positive or negative.
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When calculating,
be sure to show the equation, substitute into the equation
with units, then indicate your answer with the units.
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If a sentence is
required for an answer, it must begin with a capital letter
and end with a period. Failure
to do so is an automatic deduction, even if the physics is correct.
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Be sure all vectors
end with an arrow.
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Watch significant
figures. For example, if the answer
must be expressed to the Anearest
degree,@
then don=t
use 32.6o; use 33o.
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When drawing forces
or other vectors, be sure to end them with an arrow.
Common mistakes are not including the normal force, ignoring
the scale required by the question, and not drawing the vectors
correctly (are they concurrent?).
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Problems with reflection
and refraction usually require a normal z
perpendicular to the boundary to be drawn in on the problem.
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Measure angles as
required from true north (zero degrees), or some other reference
point as asked for in the question.
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Use the appropriate
hand rule for electromagnetism (+ right hand, - left hand).
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Current and E fields
are based on a positive test charge.
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Carefully read passages
and answer the questions based on the reading.