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What is the difference between loudness and intensity.
Important questions of this chapter sound
a man fires a shot and hears an echo from a cliff after 2 sec. he walks 85m towards the cliff and the echo of the 2nd shot is now heard after 1.4sec. what is the velocity of sound and how far was the man from the cliff when he heard the eco first?
what is the difference between Echo And Reverberation ?
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
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 ?
A piece of wax weighs 18.80 g wt. in air. A piece of metal is found to weigh 17.03 g wt.
in water. It is tied to the wax and both together weigh 15.23 g wt. in water. Find therelative density of wax?
why we cannot heard echo in small room?
why are sound waves called mechanical waves?
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 .
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
The blood pressure in humans is greater at the feet than at the brain. Why?
a tuning fork has a number 256 marked on it. what does it signify?
Explain the working and applications of sonar.
what are uses of infrasonic sound
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
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)?
25 waves pass through a point in 5s. If the distance between one crest and the adjacent trough is 0.05m , calculate
(a) the frequency
why are the ceilings of concert halls made curved?
why sound wave are called as longitudinal wave?
20 waves pass through a point in 2 seconds. If the distance between one crest and adjacent trough is 1.5 m. Calculate :-
(b) the wave length
a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?
what are the si unit of amplitude,freqency&wavelength
what are the avantages and disadvantages of echo and reverberation?
A sound of wavelength 68 cm traveks 850 m in 2.5 sec. Calculate velocity of sound and frequecy of sound.
I want to make a SUPW project please give me some simple ideas.
(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!!!
write all formula's in chapter sound ... and defines...???
reverberation? How can it be reduced?
a cricket ball is seen to hit the bat first and the sound of hitting is heard a little later, why
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.
what is the relation between amplitude and time period of a simple pendulum??
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
what is a soundboard? Expalin the working of a soundboard with the help of a labelled diagram
Define echo?Give its two applications.
A SONAR device fitted in a submarine receives an echo 4 seconds later the signal is transmitted towards another submarine 3060m away. Find the speed of sound in water.
what is an echo? what are the two conditions required to hear an echo?
describe an experiment to show that sound cannot pass through vacuum?
A source is producing 1500 sound waves in 3 sec. If the distance covered by rarefaction and compression be 68cm. find
c)velocity of sound wave
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
differentiate between crest and trough with more than 3 points (
how is echo formed?????????
Why are sound waves known as mechanical waves?
The wavelength of sound emitted by a source is 1.7*10-2 m. Calculate the frequency of sound if the wave velocity is 343.4 m/s wave velocity.
The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(
a key of a mechanical piano struck gently and then struck again but much harder this time.
in the second case
a)sound will be louder but pitch will not be different
can you explain me how the above answer to the question is correct. please justify
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 ?
if the speed of a wave is 340 m/s and is frequency is 1700 Hz. then lemda for this wave in cm wil be
on what factor does the quality of a sound depend?
how could you convince a small child that when you speak it is not necessary for air to travel from your mouth to the ear of a listener?
Explain how a human ear works
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
what is the frequency of a sound wave whose time period is 0.05 sec
Name three devices which work on the reflection of sound
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
working model for sound as project. can suggest?
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 man is kidnapped blindfolded and imprisoned in a big room. How could the man tell if he was in :-a) cityb) villagec) a bare roomd) a furnished room
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.
the flash of a gun is seen by a man 3 seconds before the sound is heard. calculate the distance of the gun from the man(speed of the sound in air is 332 m/s).
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?
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