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What is the difference between loudness and intensity.
Important questions of this chapter sound
what is the difference between Echo And Reverberation ?
What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..
1.what do you understand by 1u or 1amu.
2.why is a bell provided with a big outer case?
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 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?
why we cannot heard echo in small room?
why are sound waves called mechanical waves?
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
The blood pressure in humans is greater at the feet than at the brain. Why?
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
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 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)?
When a beam of light was passed through the solution of substance A dissolved in water the path of light could be seen. What is this phenomenon called? What is the nature of the solution?
why are the ceilings of concert halls made curved?
why sound wave are called as longitudinal wave?
Why does sound make a light spot dance ?
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?
I want to make a SUPW project please give me some simple ideas.
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?
write all formula's in chapter sound ... and defines...???
reverberation? How can it be reduced?
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.
Define echo?Give its two applications.
Sound of explosions taking place on other planets are not heard by a persin on earth.Explain, why?
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
a tuning fork has a number 256 marked on it. what does it signify?
what is an echo? what are the two conditions required to hear an echo?
how moths of certain families are able to escape capture from bat flying nearby?
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?????????
give one natural phenomenon caused by reflection of sound.
The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(
name the particles which determine the mass of an atom
Why are sound waves known as mechanical waves?
narrow tubes are used in the verification of laws of reflection of sound. the narrow tubes are because they make sound waves to:
(a)move in straight lines
(b)concentrate into a powertful beam
(c)have multiple reflections and prevent spreading of sound
(d)none of these
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 ?
on what factor does the quality of a sound depend?
Explain how a human ear works
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
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 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.
working model for sound as project. can suggest?
in which medium sound travels faster air or hydrogen
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 human heart beats 75 times in a minute.Calculate its frequency
please tell the defination of intensity of sound?
Does the sound of a bomb explosion travel faster than the sound of a humming bee?
An echo repeats two syllables. If the velocity of sound is 330m/s, then what is the distance of the reflecting surface ?
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
sound is a longitudinal wave. then why it is shown by a diagram of transverse wave in the contents?
WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
Define reflection of sound.
explain how bats use ultrasound to catch the prey
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.
property determines (a) loudness, (b) pitch?
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