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Subject: Science, asked on 12/8/17

Question number 23 and 24 in the picture please explain about the question very clearly and answer fast as possible

Subject: Science, asked on 11/8/17

Q no 14 in picture

Subject: Science, asked on 10/8/17

Question number 6

6.  Consider the following statements and select the correct option which correctly identifies true (T) and false (F).
(i)  Short string produces notes of low pitch.
(ii)  Thin string produces notes of high pitch.
(iii)  Tightly stretched string produces notes of low pitch.
                  (i)                        (ii)                           (iii)
(A)             T                          F                             T
(B)             T                          T                             F
(C)             T                          T                             T
(D)             F                          T                             F

Subject: Science, asked on 5/8/17

If sound can travel through a medium then why is it we can't talk in water ?

Subject: Science, asked on 1/8/17


when a lot of irritating noise is there why does glasses of windows shake or even break

Subject: Science, asked on 24/7/17

how can the ear detect the sound and how can we become def

Subject: Science, asked on 24/7/17

When sound travels through solid , liquid and gas medium and covering the same distance in each case then whether the time taken in those medium can be shown or justified in the following way or not- as per discussion on today(24/07/2017)
We know, Ds>Dl>Dg
therefore Vs<Vl<Vg (as D is inversely proportional to V) {Where D=density, V=Velocity , T= time period )
Hence, ts>tl>tg (as v is inversrely prportional to t)
That means Time period taken in gas medium is the least and in solid it is the highest.
Is it correct or not sir? If not please explain in detail.

Subject: Science, asked on 18/7/17

compare the pitch of objects a and b. if a produces 200 vibrations in 10 secs and b vibrates 400 times in 25 secs . which of them will produce a  flatter sound.
 

Subject: Science, asked on 11/7/17

With the help of a diagram discuss the terms: Amplitude, Time-period and Frequency of a sound wave.

Subject: Science, asked on 11/7/17

  1. If you are sitting in a boat, a sound coming from the shore will sound louder than the same sound heard by a person on land. Do you agree?give valid reasons ?
  2. What do you mean by echolocation? Write some of its applications? 
  3. Find out how ultra sounds are used in medical fields. 

Subject: Science, asked on 11/7/17

1) Ramu saw a cracker burst at night at a distance from his house. He heard the sound of the cracker a little later after seeing the cracker burst.Why do you think there is a delay in sound?
2) Why the sound produces by every vibrating body cannot be heard?(clue: the range of hearing the sound)
3)A simple the pendulum makes 10 oscillations in 20sec.What is the time period and frequency of oscillations? (clue- frequency= no. of oscillations/time taken,time period(t) = 1/frequency) 

Subject: Science, asked on 27/6/17

Are we able to listen equally from both ears

Subject: Science, asked on 27/6/17

what is the range of sound

Subject: Science, asked on 15/6/17

What isThe back and forth movement? Explain with example.

Don't give links,plz.

Subject: Science, asked on 11/6/17

What is vibrating part producing sound in Santoor?

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