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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 KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
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 simple pendulum is vibrating in an evacuated chamber. It will oscillate with a) constant amplitude b) decreasing amplitude c) increasing amplitude d) none of these
A simple pendulum is vibrating in an evacuated chamber. It will oscillate with
a) constant amplitude b) decreasing amplitude c) increasing amplitude
d) none of these
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
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?
The blood pressure in humans is greater at the feet than at the brain. Why?
how does sound from a sound producing body travel through air to reach our ears?iiustrate your ans with the help of a labelled diagram
Explain the working and applications of sonar.
differentiate between crest and trough with more than 3 points (
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
describe an experiment to show that sound cannot pass through vacuum?
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)?
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
why are the ceilings of concert halls made curved?
why sound wave are called as longitudinal wave?
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
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
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?
I want to make a SUPW project please give me some simple ideas.
Give the list of animals which can hear:
with their audible range
what are the avantages and disadvantages of echo and reverberation?
what is the relation between amplitude and time period of a simple pendulum??
write all formula's in chapter sound ... and defines...???
reverberation? How can it be reduced?
The frequency of a wave travelling at a speed of 500 ms-1is 25 Hz. Its time period will be ______.
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 .
establish the relationship between speed of sound, its wavelength and frequency?
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?
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.
on what factor does frequency of a wave depends
what is an echo? what are the two conditions required to hear an echo?
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
name one solid, one liquid and one gas thrugh which sound can travel
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?
name the type of wave that travels in gases.solids,liquids?
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 ?
Why is it that children under the age of 5 can hear sounds upto 25 kHz but adults cannot do so?
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 teh nerve which carries electrical impulses from the cochlea of ear to the brain
Name three devices which work on the reflection of sound
SOUND IS A TRANSVERS WAVE. TRUE OR FALSE. PLEASE EXPLAIN
ALSO PLEASE EXPLAIN TRANSVERSE WAVE AND LONGITUTIDNAL WAVE WITH DIAGRAMS AND EXAMPLES
working model for sound as project. can suggest?
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
Distinguish between ultrasound and infrasound in a tabular form.
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
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.
explain how bats use ultrasound to catch the prey
on which day a hot day or a cold day an echo is heard sooner? give reason for your answer
property determines (a) loudness, (b) pitch?
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
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 device called an oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. What is the wavelengt frequency and speed of the waves? Elaborate.
Difference b/w high pitched sound and low pitched sound.
A heart does 1.5 J of work in each heart beat. How many times per minute does it beat if it's power is 2 watts.
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