PROPERTIES OF WAVES
PRE-LAB QUESTIONS
1. If a wave traveling through air decreases its wavelength
by half, what happens to the wave speed and
frequency?
V
fe =
=
-
frequency remains the same
-
V doubles
2. A transverse wave is traveling down a rope with mass,
m = 10 kg, and length, L = 50 m. If the rope is under a
tension force of 2000 N, what is the wave speed of the
transverse wave?
= /u =
2 =
10 = 0 .
2k/
V
==o
V= roun
3. If a slinky has a mass of 0.5 kg and 100 loops, what is
the mass density (m/L) of a slinky that is stretched 5
meters but only 80 loops are stretched?
M m = /ky/s
=
= 0 .
, 4. Give one example of where you have experienced the
Doppler effect and explain how it represented this
scientific principle.
when the train
One of
my experience
is
passing by
.
The noise made the train
by got
louder the , more closer to me the train was.
It got lower the train further
when
got .
away
EXPERIMENT 1: WAVES
Data Sheet
Table 1: Slinky® Measurements
Slinky Mass Number of Mass/Loop
Length (m)
(kg) Loops (kg/loop)
0 . 3970 0032 .
Table 2: Wave Time Measurements for Relaxed
Slinky®
Trial Time (s) Tension Force (N)
I 1 8%
2 4 .
.
2 1 08 .
3 1 .
06
4 1 05 .
Table 3: Wave Time Measurements for Increases
Tension Slinky®
Trial Time (s) Tension Force (N)
I 0 .
80 .E
3
20 .
73
25
0
.
0 .
78
70
30
-
.
PRE-LAB QUESTIONS
1. If a wave traveling through air decreases its wavelength
by half, what happens to the wave speed and
frequency?
V
fe =
=
-
frequency remains the same
-
V doubles
2. A transverse wave is traveling down a rope with mass,
m = 10 kg, and length, L = 50 m. If the rope is under a
tension force of 2000 N, what is the wave speed of the
transverse wave?
= /u =
2 =
10 = 0 .
2k/
V
==o
V= roun
3. If a slinky has a mass of 0.5 kg and 100 loops, what is
the mass density (m/L) of a slinky that is stretched 5
meters but only 80 loops are stretched?
M m = /ky/s
=
= 0 .
, 4. Give one example of where you have experienced the
Doppler effect and explain how it represented this
scientific principle.
when the train
One of
my experience
is
passing by
.
The noise made the train
by got
louder the , more closer to me the train was.
It got lower the train further
when
got .
away
EXPERIMENT 1: WAVES
Data Sheet
Table 1: Slinky® Measurements
Slinky Mass Number of Mass/Loop
Length (m)
(kg) Loops (kg/loop)
0 . 3970 0032 .
Table 2: Wave Time Measurements for Relaxed
Slinky®
Trial Time (s) Tension Force (N)
I 1 8%
2 4 .
.
2 1 08 .
3 1 .
06
4 1 05 .
Table 3: Wave Time Measurements for Increases
Tension Slinky®
Trial Time (s) Tension Force (N)
I 0 .
80 .E
3
20 .
73
25
0
.
0 .
78
70
30
-
.
