2. A wave is a traveling disturbance
that carries energy from place to
place with or without a medium.
3. A medium is matter in which
waves can travel and transfer
energy.
4. Waves that require a medium such
as water waves, sound waves, and
waves along the slinky are
mechanical waves. On the other
hand, electromagnetic waves can
travel even without a medium.
12. The wavelength (λ) is the measure
of the horizontal distance between
two successive crests or two
successive troughs. It is also equal
to the horizontal distance between
any identical points on the
successive waves.
𝑇 = 𝑓
1
13. he speed (v) of the wave is the
distance of a wave in one second.
Because the wave crest travels a
distance of one wavelength in one
period. The wave speed is
computed using :
𝑣 = 𝑇 𝑂𝑟 𝑉=𝑓λ
λ
14. Where v is the speed measured in
meters per second (m/s), λ is the
wavelength measured in meters
(m), T is the period measured in
seconds (s), and f is the frequency
measured in cycles per (1/s) or
hertz (Hz).
15.
16. The sample shows the displacement-
position graph of a wave traveling
along a length of a rope. It took 3s for
the energy of the wave to reach 3m
along the rope. Determine the
following in the wave:
a. Amplitude, a
b. Period, T
d. Frequency, f
e. Speed, v
17. Solution:
a. amplitude, a = 0.3 m
b. wavelength, λ =
3𝑚
2
= 1.5 m
c. Period, T =
3𝑚
2
= 1.5s
Frequency, f
1
𝑇
=
1
1.5 𝑆
= 0.67 Hz
e. Speed, v = 𝑓λ
= (0.67 Hz) (1.5 m)
