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1 hz = how many decibels?
a spoon can sound like a bell. No, this is not riddle. it's science. prove it?
what is the relationship between frequency and time period
give 15 musical instruments with their names and their vibrating parts?
give 4 advantages and disadvantages of loudspeakers?
What is the difference between Noise and Music?
some steps to reduce noise pollution?
Why don't we hear sound of exploding meteors in sky
Which of the following voices is likely to have maximum frequency?
Explain the principle on which Jaltarang works.
5 differences between loudness and pitch
Why the voice of men, women and children are different?
write a short note on noise pollution and i need it fast please
how do whales and dolphins communicate under water?
What is the difference between Vibration and Oscillation ?
a spoon can sound like a bell prove it
How do loudness and pitch of sound depend on amplitude and frequency respectively?
1. In which medium speed of sound is maximum an din which minimum ?
2. A pendulum makes 16 oscillations in 2 seconds . What is the frequency of the pendulum ?
A man stationed between two parallel cliffs fires a gun . He hears the first echo after 1.5s and the next after 2.5s. What is the distance between the cliffs and when does he hear the third echo? Take the speed of sound in air as 340m/s .
what are the vibrating part of following objects
a.harmonium b.tabla c.flute d. guitar e.ghatam f.manjira g.noot h.kartal i.sitar j.striking a pan
What are longitudinal and transverse wave? and is Sound a longitudinal wave?
what is amptitude
What is amplitude,frequency and time period?
Which of the following voices is likely to have minimum frequency.
(a) A man (b) A baby girl (c) A baby boy (d) A woman
identify the sources of noise pollution in your locality. Discuss with your parents, friends and neighbours. Suggest how to control noise pollution. Prepare a brief report and present it in the class.
suppose you are going in a jet plane,and one of the windows breaks due to an accident.what problems do you think you will face?
name any 7 musical instruments and their vibrating parts
what is the SI unit of vibration ?
If we want to hear a train approaching from far away , why it is more convenient to put th ear to the track ?
compare the transmission of sound in solids , liquids and gases?
The harder we beat a table,the louder is the sound.List two reasons for it.
give two uses of ultrasonic vibrations in industry .
Can any one please tell me what is the instrumant in Q12 in the test above??????
How can you say that sound is a form of energy? Explain with examples.
The amplitude of the sound wave decides on its _________.
any 5 difference between audible and inaudible sound plz do it quick.
What is audible and inaudible sounds
Why we cant see the waves of sound through our eyes? As we cant see them then how can we tell that sound travels in waves?
We can see it in other medium like water but not in air so how can we tell it ?
an explosion occurs on the moon.will it be
b)heard on the earth instantly or after sometime?
State true or false
1.Sound can be produced by beating an object irrespective of whether there are vibrations or not.
2.The sound of a tabala normally has a lower pitch than the sound of a violin.
3.A short flute will produce sound of lower pitch than a long flute.
In the game of hide and seek how the blind folded person guess ho is the nearest person to him
how do human beings produce sound
What are ultrasonic sounds? Write some applications of ultrasonic waves.
what are two important properties of sound
Loudness of sound is proportional to the square of the amplitude of the vibration produced...justify,
1 give reasons
A) Cinema halls and auditoriums are carpeted and their walls are coated with rough material
b) Echoes are not formed in our classrooms
Write an activity to prove that sound needs a medium for propogation .
I searched it on the study material but realistic activities are needed inculing
2) Materials Required
4) Observation / Conclusion
Thanks in adance and don't forget to wish me 'All The Best' for the exam . Tomorrow it will take place .
what are disadvantages of sound pollution
How to make ektara at home
what is sound ?
define sound .
difference between audible and inaudible sound
explain how noise pollution is harmful to human beings?
what is noise pollution
what is the difference between time period and frequency
A car driver took a total of 2 hours to make a journey of 75 km. He had a coffee break of half an hour and spent a quarter of an hour stationery in a traffic jam. What was his average speed during the journey ?
describe an experiment to show that sound can travel through liquids.
If the amplitude is increased by 3 times , by how much does the loudness increase?
what is a tuning fork?
and what is it used for...??
time taken to complete one oscillation is called
what is the mathamatical value of wave velocity
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