Question

Standing Waves

1. Draw a sine wave. On this graph, indicate what the Amplitude and Period are. If someone just gave you this graph, how could you find the Frequency?

2. Imagine that two water waves moving in opposite directions run into each other. What will the resulting wave look like?

3. When 2 waves interfere, can the resulting wave have a larger amplitude than either of the two original waves? When?

4. What is the definition of a node?

5. For musical instruments, the sound waves produced are of a certain frequency. This frequency corresponds to the pitch of the notes that your ears hear. How can one instrument make so many different sounds?

Answer #1

a)Draw a sine wave and point out the Amplitude, Peak Amplitude,
Peak-to-Peak Amplitude, and the period of the wave.
b) What is the formula for a sine wave? – the Period and the
Frequency?
c) Draw two sine waves where one is 90 deg phase shifted from
the other and label the leading and lagging wave. Why are sine
waves important in electronics?

*I NEED ALL THE QUESTIONS ANSWERS*
1.When the period of oscillation decreases, the (a) amplitude
increases, (b) frequency increases, (c)
wavelength increases, (d) frequency decreases.
2.Sound is (a) transverse wave, (b) longitudinal wave, (c)
standing wave, (d) magnetic wave.
3.When two waves interfere, which of the following add? (a)
wavelength, (b) frequency, (c) phase, (d) amplitude.
4.The wave speed is equal to (a) the ratio of the frequency and
wavelength, (b) the ratio of the frequency and the period, (c)...

Consider a loop in the standing wave created by two waves
(amplitude 5.86 mm and frequency 113 Hz) traveling in opposite
directions along a string with length 2.89 m and mass 129 g and
under tension 44.0 N. At what rate does energy enter the loop from
(a) each side and (b) both sides?
(c) What is the maximum kinetic energy of the
string in the loop during its oscillation?

Consider a loop in the standing wave created by two waves
(amplitude 5.58 mm and frequency 115 Hz) traveling in opposite
directions along a string with length 3.98 m and mass 145 g and
under tension 42.4 N. At what rate does energy enter the loop from
(a) each side and (b) both sides?
(c) What is the maximum kinetic energy of the
string in the loop during its oscillation?

Two waves moving in opposite directions produce a standing wave.
The individual wave functions are: y1(x, t) = 5 sin (5x – 10t)
y2(x, t) = 5 sin (5x + 10t) where x and y are in meters and t in
seconds.
A. What is the amplitude of the simple harmonic motion of the
element of the medium located at x = 5 m?
B. What is the position of the first anti-node if one end of the
string is...

2 Amplitude Modulation
When two musical notes are nearly the same pitch, one can hear
“beats” — a periodic rise and fall in the volume of a single
pitch.
(a) Generate a plot of this phenomenon. Create — and upload — a
graph of the waveform f(t) that results from superposition of two
waves with similar frequencies:
f1(t) =cos21t, f2(t) =cos19t, f(t) = f1(t)+f2(t)
(b) Describe the significant features of your plot. What pitch
would you hear? At what frequency...

Two waves traveling in opposite directions on a stretched rope
interfere to give the standing wave described by the following wave
function:
y(x,t) = 4 sin(2πx) cos(120πt),
where, y is in centimetres, x is in meters, and t is in seconds.
The rope is two meters long, L = 2 m, and is fixed at both
ends.
In terms of the oscillation period, T, at which of the following
times would all elements on the string have a zero vertical...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 7 minutes ago

asked 17 minutes ago

asked 18 minutes ago

asked 26 minutes ago

asked 27 minutes ago

asked 31 minutes ago

asked 34 minutes ago

asked 41 minutes ago

asked 48 minutes ago

asked 54 minutes ago

asked 54 minutes ago