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No. 15
Cycle of Simple Pendulum
Determines the cycle (
T
T
= 2π
= 2π
g
g
No. 16
Cycle of Spring Pendulum
Determines the cycle of simple oscillation (
m
weight (
) and the spring constant of the spring (
m
m
T
T
= 2π
= 2π
k
k
No. 17
Doppler Effect
Determines the oscillation frequency (
and observer are moving, when the sound source oscillation frequency (
v
(
), sound source movement speed (
−
−
v
v
u
u
f
f
f
f
=
=
1
1
−
−
v
v
v
v
1
1
No. 18
Equation of State of Ideal Gas
Determines the pressure (
V
and volume (
) are known.
nRT
nRT
P
P
=
=
(
(
V
V
No. 19
Centrifugal Force
Determines the centrifugal force (
r
pattern of radius
.
v
v
2
2
m
m
F
F
=
=
r
r
No. 20
Elastic Energy
Determines the elastic energy (
x
length (
) are known.
1
1
U
U
K
K
x
x
2
2
=
=
2
2
T
) of a simple pendulum with a string of length .
(
(
g
g
: gravitational acceleration, > 0
: gravitational acceleration, > 0
m
m
k
k
(
(
,
,
> 0)
> 0)
v
(
(
≠
≠
>
>
v
v
v
v
f
f
,
,
1
1
1
1
P
) of a gas when the number of mols (
R
R
n
n
: gas constant,
: gas constant,
,
,
F
) for an object of mass
m
m
v
v
r
r
(
(
,
,
,
,
> 0)
> 0)
U
) of an object when its elastic constant (
K
K
x
x
(
(
,
,
> 0)
> 0)
)
)
T
) of a spring pendulum when the mass of the
k
) are known.
f
) heard by an observer when both the sound source
) and observer movement speed (
1
−
−
−
−
v
v
u
u
v
v
v
v
0, (
0, (
)/(
)/(
1
1
Units:
T
T
V
V
)
)
,
,
> 0
> 0
Units:
E-61
Units:
m
k
Units:
: kg,
: N/m,
f
), acoustic velocity
1
u
) are known.
)
)
>
>
)
)
0
0
v
v
u
,
and
: m/s,
1
n
), absolute temperature (
n
T
: mol,
: K,
m
moving at velocity
m
v
Units:
: kg,
K
) and elongated
K
Units:
: N/m,
T
: m,
: seconds
T
: seconds
f
f
and
: Hz
1
T
),
3
3
V
P
: m
,
: N/m
v
in a circular
r
F
: m/s,
: m,
: N
x
U
: m,
: J
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