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What is the difference between loudness and intensity.
1.what do you understand by 1u or 1amu.
2.why is a bell provided with a big outer case?
Important questions of this chapter sound
what is the difference between Echo And Reverberation ?
a man stands in between two high raised building & blows a whistle.He hears two successive echos after 0.4s & 1.6s.Calculate the distance between the building.speed of sound is 332m/s.
What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..
a person is listening to a tone of 500 Hz sitting at a distance of 450m from the source of the sound . What is the time interval between successive compressions from the source ?
why we cannot heard echo in small room?
a sonic tape measure is used to measure the length of a room.it measures a time interval of 0.06 s between transmitting a sound pulse and recieving the echo .the speed if sound in air is 330 m/s.how far is the reflecting wall from the tape measure?????? explain step by step......
why are sound waves called mechanical waves?
describe an experiment to show that sound cannot pass through vacuum?
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
When a wave travels through a medium ____ .
(A) Particles are transferred from one place to another
(B) Energy is transferred in a periodic manner
(C) Energy is transferred at a constant speed
(D) None of the above statements are applicable
The blood pressure in humans is greater at the feet than at the brain. Why?
Explain the working and applications of sonar.
what are uses of infrasonic sound
A solid weighs 50 gf in air and 44 gf in when completely immersed in water. Calculate(i) the upthrust (ii) volume of the solid and (iii) the relative density of the solid
a stone is dropped from the top of a tower 500m high into a pond of water at the base of the tower . when is the splash heard ? g = 10m/s2 and speed of sound = 340m/s
the time period of a sound wave travelling in a medium is T. if at a given instance (t=o) a particular region in the medium has minimum density. the density of this region will be maximum and minimum respectively again at......t=T and t=2T respectively....true or false
A person has a hearing range from 20Hz to 20KHz. what are the typical wavelength of sound waves in air corresponding to these two frequencies?(Speed of sound =344m/s)?
why are the ceilings of concert halls made curved?
(i) 50 sound waves pass through a point in 0.1 s. If the distance between one compression and the subsequent rarefaction is 0.34 m, calculate (a) frequency (b) wavelength (c) wave velocity of the longitudinal wave in air.
(ii) Represent graphically by two separate diagrams in each case.
(a) Two sound waves having the same amplitude but different frequencies.
(b) Two sound waves having the same frequency but different amplitudes.
(c) Two sound waves having different amplitudes and also different wavelengths.
PLEASE ANSWER AS SOON AS U CAN!!!
why sound wave are called as longitudinal wave?
a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?
which of the following can be used to find the focal lenght of convex lens ?
object at a distance of 10cm for lens of focal lenght 30cm
light from a laboratory window
light from sun
light from a tree next to the window
what are the si unit of amplitude,freqency&wavelength
A sound wave has a frequency of 2 kHz and wavelength 35 cm. How long will it take to travel 1.5 km?
what are the avantages and disadvantages of echo and reverberation?
WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
A stone is dropped into a well, 44.1 m deep. The sound of the splash is heard 3.13 s after the stone is dropped. Find the velocity os sound in air .
1. A violin and a flute are both played at the same time in an orchestra. Both sounds travel through the same medium and arrive at our ear at the same time. Both sounds travel at the same speed irrespective of source but the sounds we receive are different. What are the characteristics that differentiate the two sounds?
I want to make a SUPW project please give me some simple ideas.
A) If a source of sound produces 500 compressions and 500 rarefactions in air in 25 seconds, find the frequency of sound produced ?
write all formula's in chapter sound ... and defines...???
Why does sound become faint with distance?
reverberation? How can it be reduced?
Which of the following is not a characteristic of sound ?
A wave pulse on a string moves a distance of 8 m in 0.05 secs. find the velocity of the pulse and the wavelenght of the wave on the string if its frequency is 200 hz
establish the relationship between speed of sound, its wavelength and frequency?
state the laws of reflection of sound .explain three application based on these laws.
you are given solid cubes of aluminium and iron, each of side 4 cm, and 2 spring balances. Balance A has a range of 0 to 250 g and a least count of 2.5 g, while balance B has a range of 0 to 1000 g and a least count of 10 g. The preferred option of mass measurement would be to use:
Define echo?Give its two applications.
Why does sound travel faster in Hydrogen than Oxygen?
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
what is an echo? what are the two conditions required to hear an echo?
Why is the skin of a tabla tightened to produce shrill sounds?
how many vibrations will a tuning fork of frequency 280 hz will complete during the time sound travels forward in air by 18 cm.speed of sound in air be 336 m/sec
how is echo formed?????????
The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(
Why are sound waves known as mechanical waves?
when we put our ear to a railway line we can hear the sound of an approaching train even when thr train even when the train is far off but its sound cannot be heard through the air why?
The frequency of a source of sound is 100 Hz . How many times does it vibrate in a minute?
What are the uses of multiple reflection of sound ?
Does light occupy space and has mass?
on what factor does the quality of a sound depend?
sounds produced by girls are shrill than that of boys.why?
Explain how a human ear works
A man standing in front of a hill produces an articulate sound and hear its echo after 4.5s. He then moves 250m towards hill and produces the same sound. Its echo is now heard after 3.1s. Find original density of man from hill and velocity of sound.
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
what is meant by the statement "frequency of a source of sound is 200hz
Name three devices which work on the reflection of sound
a source of sound produces 20 compressions and 20 rarefractions in 0.2 seconds.the distance between a compression and rarefaction is 50cm . find the wavelength,frequency and time period of the wave.
please do answer it fast cuz tommorow is my finals.
a tuning fork has a number 256 marked on it. what does it signify?
working model for sound as project. can suggest?
is speed and frequency denoted by the same letter???????
A man standing between two parallel cliffs and fires a gun and hears two successive echoes after 4 second and 6 second the distance between the cliffs is (Speed of sound 330 ms-1)
(a) 1600 m (b) 1650 cm (c) 1650 m (d)1590 m
A person is standing between 2 vertical cliffs and 640 m away from the nearest cliff he shouted . he heard the first echo after 4 sec and the second echo 3 sec later. calculate
a) velocity of sound in air
b) distance between the cliffs
A human heart beats 75 times in a minute.Calculate its frequency
Does the sound of a bomb explosion travel faster than the sound of a humming bee?
a person standing between two vertical cliffs and 640m away from nearest cliff shouted he heard first echo after 4 sec and second echo 3 sec later. calculate
explain how bats use ultrasound to catch the prey
property determines (a) loudness, (b) pitch?
is the sum of angle of reflection and incidence always 90 degrees??????
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