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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
A man is standing 400 m away from a 40 Hz sound source. What is the time interval in which successive compression pulses from the source reach him ?
what is the difference between Echo And Reverberation ?
calculate the number of aluminium atoms present in 51g of aluminium oxide Al2o3
What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..
A solid object of mass 5 kg floats in a liquid . Calculate the buoyant force acting on the body.
one side of a ripple tank ABCD is raised slightly, and a ripple tank started at P by a finger, After 1 secnd the shape of the ripple as shown.
a) why is it not circular?
b) which side of the tank has been raiseD?
Help me please. I have quiz tomorrow
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 does sound travel faster in Hydrogen than Oxygen?
why we cannot heard echo in small room?
why are sound waves called mechanical waves?
at a particular point A, at a given instant there is a crest . after how much time will the next crest arrive at the point A ?
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
Why does sound become faint with distance?
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 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)?
a tuning fork produces 256 waves in 4 seconds. calculate the frequency of tuning fork.
why are the ceilings of concert halls made curved?
what is the difference between shrill and hoarse sound
why sound wave are called as longitudinal wave?
Why is it that children under the age of 5 can hear sounds upto 25 kHz but adults cannot do so?
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
A body vibrating with time period of 2 milliseconds produces a wave travelling in a mdium with velocity of 1250m/s. Calculate the wavelength ?
what are the avantages and disadvantages of echo and reverberation?
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.
after emitting the, find how far is bat from obstacle and wave length of wave?
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
WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
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.
In a ripple tank , 10 ripples are produced in 1 second. If the distance between a crest and the next trough is 10 cm. Find: 1] frequency 2] wave length 3] velocity of the ripple.
Define echo?Give its two applications.
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
differentiate between crest and trough with more than 3 points (
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 tuning fork has a number 256 marked on it. what does it signify?
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?????????
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:
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?
Name the sequence of energy changes taking place in setting a truck in motion.
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?
waves propogate well in:
c)both a and b
d)none of these
Explain how a human ear works
A longitudinal pulse was created in a slinky of length 6 m by a group of four students A, B ,C and D.They observed that the pulse completed its 4 to and fro motion in 10 s.On the basis of this data,the speed of pulse in the slinky is
a) 4.8 m s-1 b) 6.4 m s-1 c) 7.2 m s-1 d) 9.6 m s-1
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
Name three devices which work on the reflection of sound
what is vacuum/ explain why sound cannot travel through vacuum
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
The longitudinal waves travel in a coiled spring at a rate of 4m/s. The distance between two consecutive compressions is 20 cm. Find (1)- wavelength of longitudinal wave (2)- frequency of the wave motion.
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?
(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.
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