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Sanidhya Dhariwal
Subject: Science
, asked on 15/9/17
what is the difference between decible and herdz?
Answer
1
Ankita Mukherjee
Subject: Science
, asked on 9/9/17
Answer fast
Q. Raja and Ridhi went to hill station. On a hilly area Raja shouted Ridhi's name. To his surprise he could hear same sound twice. Ridhi explained that it was echo of his own sound. On coming back to hotel, he shouted again but could not hear the echo.
a) What is echo?
b) Why could he not hear any echo in room?
c) What value was shown by Ridhi?
Answer
2
Kavya Pahuja
Subject: Science
, asked on 9/9/17
IN A RIPPLE TANK , 15 FULL RIPPLES ARE PRODUCED IN ONE SECOND. IF DISTANCE BETWEEN A TROUGH AND THE NEXT CREST IS 20 CM . FIND [A] FREQUENCY [B] WAVELENGTH
Answer
1
Kavya Pahuja
Subject: Science
, asked on 9/9/17
A Source Is Produce 20 Waves In 4 Sec . The Distance Between A Crest And A Trough Is 12cm. Find 1. Freqency 2. Wavelength 3. Velocity.
Answer
1
Ankita Mukherjee
Subject: Science
, asked on 29/8/17
Q. You blow at the edge of the mouth of a glass bottle first and then a plastic bottle. In which case a shriller sound will be produced ? Can you tell the reason why? Which things vibrated here to produce the sound?
Answer
1
Abinandh Radhakrishnan
Subject: Science
, asked on 25/8/17
Can the frequency of sound be equal to its pitch?
Answer
1
Abinandh Radhakrishnan
Subject: Science
, asked on 25/8/17
When we bounce a ball on the ground, How does the height at which it bounces become the amplitude?
Answer
3
Sandipan
Subject: Science
, asked on 24/8/17
IN WHICH OF THE FOLLOWING MATERIAL IS THE SPEED OF THE SOUND MAXIMUM?
a)iron
b)Sea Water
c)Freshwater
d)Air
Answer
4
Vanshika
Subject: Science
, asked on 23/8/17
if amplitude is increased by 3 times how much loudness increase
Answer
1
Vanshika
Subject: Science
, asked on 23/8/17
in what ways loudness depend on amplitude
Answer
1
Anwesha Tripathy
Subject: Science
, asked on 22/8/17
WHAT ARE ECHOES ? WRITE THE APPLICATIONS OF ECHOES . (WRITE AT LEAST 6-7 POINTS)
Answer
2
Anwesha Tripathy
Subject: Science
, asked on 22/8/17
HOW WILL YOU KNOW THAT SOUND REQUIRES A MEDIUM FOR PROPAGATION ?
(WRITE AT LEAST 6-7 POINTS )
Answer
2
Jasmeen Boparai
Subject: Science
, asked on 20/8/17
Please answer it
Answer
3
Dhruv Nigam
Subject: Science
, asked on 18/8/17
If temperature increases , what happens to frequency of sound wave? Explain with example and diagram.
Answer
1
Jasmeen Boparai
Subject: Science
, asked on 17/8/17
How can we say that one oscillation of sound is equal to one oscillation of Pendulum? Are both are equal?
Answer
3
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Q. Raja and Ridhi went to hill station. On a hilly area Raja shouted Ridhi's name. To his surprise he could hear same sound twice. Ridhi explained that it was echo of his own sound. On coming back to hotel, he shouted again but could not hear the echo.
a) What is echo?
b) Why could he not hear any echo in room?
c) What value was shown by Ridhi?
Q. You blow at the edge of the mouth of a glass bottle first and then a plastic bottle. In which case a shriller sound will be produced ? Can you tell the reason why? Which things vibrated here to produce the sound?
a)iron
b)Sea Water
c)Freshwater
d)Air
(WRITE AT LEAST 6-7 POINTS )