A sound signal of 128 vibration per second has a wavelength of 2.7 m . Calculate the speed with which the wave travels.?

Question

Answer

Frequency = velocity/wavelength ,
velocity= frequency×wavelength,
128×2.7=345.6,
speed=345.6

Answer

Answer

Answer is 345.6 speed.

Answer

Given:
- Frequency (f) = 128 vibrations per second
- Wavelength (λ) = 2.7 m

To find:
- Speed of the wave (v)

Formula:
- Speed of wave (v) = Frequency (f) x Wavelength (λ)

Solution:
To calculate the speed of the wave, we can use the formula mentioned above. The speed of a wave is the distance traveled by the wave per unit time.

Substituting the given values into the formula:
v = f x λ
= 128 vibrations per second x 2.7 m
= 345.6 m/s

Therefore, the speed at which the wave travels is 345.6 m/s.

Explanation:
- Sound is a form of mechanical wave that travels through a medium, such as air or water. It is characterized by its frequency and wavelength.
- Frequency is the number of vibrations or cycles of a wave that occur in one second. It is measured in units of hertz (Hz).
- Wavelength is the distance between two consecutive points of a wave that are in phase, such as two consecutive compressions or rarefactions. It is measured in units of meters (m).
- The speed of a wave is the distance traveled by the wave per unit time. It can be calculated by multiplying the frequency of the wave by its wavelength.
- In this case, the given sound signal has a frequency of 128 vibrations per second and a wavelength of 2.7 m.
- By substituting these values into the formula, we can find that the speed of the wave is 345.6 m/s.
- This means that the wave travels a distance of 345.6 meters in one second.

Summary:
The speed of the sound wave with a frequency of 128 vibrations per second and a wavelength of 2.7 meters is calculated to be 345.6 m/s.

Similar Class 9 Doubts

A body travels 200 CM in 2 seconds and 220 CM in 5 seconds calculate the velocity at the end of 7 second from the start?

A body travels 200 CM in the first 2 seconds and 220 centimetre in the next 5 seconds calculate the velocity at the end of 7 second from the start?

A body travel 2 m in first 2 second and 2.2 m in next 5 second calculate the velocity end of 7 second from start?

A car starting from rest and moving with uniform acceleration on a straight road travels for sometime such that the paths described by in the last second and in the penultimate second of it's motion are in ratio 4:3 respectively. Calculate the total time taken by the car?

A body travels 200 CM in the first 2 seconds and 220 CM in next 5 seconds calculate the velocity at the end of 7 seconds from the start?

Top Courses for Class 9View all

Science Class 9

Social Studies (SST) Class 9

Mathematics (Maths) Class 9

English Class 9

English Grammar Advanced

Top Courses for Class 9

Top Courses for Class 9

Suggested Free Tests

Related Content

Class 9 Study Material

Class 9 Subjects

Competitive Examinations for Class 9

NCERT Books

NCERT Solutions

Reference Books for Class 9

Other Popular Exams

Company