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First Midterm Study Guide
Phys2306 4:005:15 MW Fall 09
Prof. Jonathan Link
You are expected to memorize any equation that appears in this study guide.
You are
expected to know when and how to use other equations, which are mentioned but not
shown.
Chapter 15
:
1)
Know the relationships between wavelength (
λ
), frequency (
f
), wave velocity (
v
),
angular frequency (
ω
), and wave number (
k
):
v
=
λ
f
k
=2
π
/
λ
ω
=2
π
f
v
=
ω
/
k
2)
Know the formula for the wave function of a traveling wave in terms of the above
quantities and the wave Amplitude, A.
y
(
x
,
t
) = A cos(
kx
–
ω
t
) = A cos(2
π
x
/
λ
– 2
π
ft
)
and know what determines the wave direction.
3)
Know the
Principle of Superposition
and what happens when a wave reflects off a
fixed or free end.
4)
Know how to determine the transverse velocity of a wave (
t
t
x
y
t
x
v
∂
∂
=
)
,
(
)
,
(
).
5)
Know the relationship between string length and wavelength for normal modes on a
string.
Chapter 16
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