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What is the difference between loudness and intensity.
Important questions of this chapter sound
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?
what is the difference between Echo And Reverberation ?
The frequency of a wave travelling at a speed of 500 ms-1is 25 Hz. Its time period will be ______.
What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..
what are the avantages and disadvantages of echo and reverberation?
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?
why are sound waves called mechanical waves?
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
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
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
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
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 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 .
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?
why sound wave are called as longitudinal wave?
a tuning fork has a number 256 marked on it. what does it signify?
a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?
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?
what are the si unit of amplitude,freqency&wavelength
1.what do you understand by 1u or 1amu.
2.why is a bell provided with a big outer case?
I want to make a SUPW project please give me some simple ideas.
wht is reverberation ? what will happen if reverberation time in a big hall is too long? how can we reduce it?
write all formula's in chapter sound ... and defines...???
reverberation? How can it be reduced?
how sound is produced by your school bell.
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
establish the relationship between speed of sound, its wavelength and frequency?
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
state the laws of reflection of sound .explain three application based on these laws.
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
Define echo?Give its two applications.
differentiate between crest and trough with more than 3 points (
what is an echo? what are the two conditions required to hear an echo?
(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!!!
describe an experiment to show that sound cannot pass through vacuum?
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?????????
Why are sound waves known as mechanical waves?
The frequency of a source of sound is 100 Hz . How many times does it vibrate in a minute?
A boy standing 100m from a tall building claps his hands and hears an echo 0.6 later. Find the speed of sound in air.
The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(
What are the uses of multiple reflection of sound ?
on what factor does the quality of a sound depend?
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
Explain how a human ear works
Name three devices which work on the reflection of sound
in a spring balance the space between zero and 25 g marks is divided into 5 equal parts. the least count of the spring balance is 1. 5 g wt 2. 2.5 g wt3. 25 g wt4. 0.25 g wt
working model for sound as project. can suggest?
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
Does the sound of a bomb explosion travel faster than the sound of a humming bee?
A human heart beats 75 times in a minute.Calculate its frequency
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 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
Why is it that children under the age of 5 can hear sounds upto 25 kHz but adults cannot do so?
property determines (a) loudness, (b) pitch?
1- Why do empty vessels make more sound than a filled vessel? (Physics related, not idiom). Explain.
2- If you set your watch by the sound of a distant siren, will it go fast or slow?
I need help with these two questions. Do help me if possinle.
Thanks in advance!
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