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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..
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?
a tuning fork has a number 256 marked on it. what does it signify?
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?
what happens when a vibrating tuning fork is dipped in water?
Explain the working and applications of sonar.
1.what do you understand by 1u or 1amu.
2.why is a bell provided with a big outer case?
what are uses of infrasonic sound
what is the frequency of a sound wave whose time period is 0.05 sec
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 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?
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)?
A man stands in between 2 walls and burst a balloon.He hears 2 successive echoes after 0.5 and 2.5 seconds.Calculate the distance between the walls when the speed of the sound is 332 m/s.
why are the ceilings of concert halls made curved?
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?
what is the relation between amplitude and time period of a simple pendulum??
what are the si unit of amplitude,freqency&wavelength
waves propogate well in:
c)both a and b
d)none of these
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 .
I want to make a SUPW project please give me some simple ideas.
write all formula's in chapter sound ... and defines...???
reverberation? How can it be reduced?
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
establish the relationship between speed of sound, its wavelength and frequency?
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?
state the laws of reflection of sound .explain three application based on these laws.
a tuning fork is producing sound. prove with an activity that sound is produced by it due to vibration
Define echo?Give its two applications.
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?
describe an experiment to show that sound cannot pass through vacuum?
a man sets his watch by the sound of a siren placed 1km away. if velocity of sound in air is 330m/s how much error will his watch show?
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?
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 ?
A source of sound is placed at one end of an iron bar 2km long and two sounds are heard at the other end at an interval of 5.6 s. If the velocity of sound in air is 330m/s.
1. the time taken by sound to travel 2km in iron is
(A) 0.46s (B) 0.16 s
2. Velocity of sound in iron is
(A) 2348m/s (B)4348m/s
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
why are the ceilings of concrete halls made curve ? draw a diagram to illustrate ur amswer
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.
working model for sound as project. can suggest?
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
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
A sound wave has a frequency 1000Hz and wavelength 34cm. How long will it take to move through 1 km?
WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
property determines (a) loudness, (b) pitch?
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