# physicss

A long string carries a wave; a 5.40-m segment of the string contains three complete wavelengths and has a mass of 180 g. The string vibrates sinusoidally with a frequency of 45.0 Hz and a peak-to-valley displacement of 19.0 cm.

how do you go about writing a formula in the form of A sin(kx+wt)??

1. 👍
2. 👎
3. 👁
1. Although you don't say so, the formula you are trying to fit indicates a traveling wave, not a standiung wave.

I don't see why you need the mass of the string. It does have a role in determining the wave speed, but so does the tension, which you do not provide.

Your wavelength is 5.4/3 = 1.8 m
w = 2 pi f = 282.74 rad/s
Your amplitude is A = 9.5 cm

k = 2 pi/(wavelength) = 3.49 m^-1

1. 👍
2. 👎
2. the mass is important for part b. they must have just not included it. but it asks for the power in part b. you need the mass to find the inertial factor(mass/length)

1. 👍
2. 👎

## Similar Questions

1. ### Physics

A stretched string fixed at both ends is 2.0 m long. What are the three wavelengths that will produce standing waves on this string? Name at least one wavelength that would not produce a standing wave pattern, and explain your

2. ### Physics

Hi, can anybody provide some hints in how to approach these questions? I've been stuck on it for days!!! Thank you in advance!! Nodes of a Standing Wave: Consider a standing wave, where y represents the transverse displacement of

3. ### physics(HELP)

An unfingered guitar string is 0.73m long and is tuned to play E above middle C (330 Hz.) (a) How far from the end of this string must a fret (and your finger) be placed to play A above middle C (440 Hz)? (b) What is the

4. ### science

A string is waved up and down to create a wave pattern with a wavelength of 0.5 m. If the waves are generated with a frequency of 2 Hz, what is the speed of the wave that travels through the string to the other end? The speed of

1. ### Physics

Which wave of the following wavelengths could not make a standing wave in a 1.0 m string, with nodes at both ends? A. 2.0 m B. 1.0 m C. 0.75 m D. 0.50 m E. 0.25 m i think the answer is D

2. ### PHYSICS

The fundamental frequency of a standing wave on a 1.0 m long string is 440 Hz. What would be the wave speed of a pulse moving along the string

3. ### physics

A string has a linear density of 8.5*10^-3 kg and is under the tension of 280 N. The string is 1.8 m long, is fixed at both ends, and vibrating in the standing wave pattern. What is the speed, length, and frequency?

4. ### Physics

Student observed ten antinodes on a string of length 1.70 m under tension produced by a mass of 0.22 kg. The string linear density is 1.3 gram/meter. What is the difference between the transverse wave velocity calculated from the

1. ### Physics

A distance of 5.00 cm is measured between two adjacent nodes of a standing wave on a 20.0 cm long string. A) In which harmonic number is the string vibrating?

2. ### high school physics

a string 180 cm long resonates in a standing wave that has 3 segments when driven by a 270hz vibrator. What is the speed of the waves on the string? (answer in book 324 m/s) frequency = 270 hz segments of wave = 3 v= f x wave I

3. ### Physics

To demonstrate standing waves, one end of a string is attached to a tuning fork with frequency 120 Hz. The other end of the string passes over a pulley and is connected to a suspended mass M, as shown. The value of M is such that

4. ### physics

A Piece of string 5.3-m long has a mass of 15.o g what must the tension in the string be to make the wavelength of a 125- Hz wave 120.0 cm