Subject: Science, asked on 23/2/14

## why sound wave are called as longitudinal wave?

Subject: Science, asked on 21/3/15

## In air medium at room temperature speed of sound is 345m/s. If a tuning fork produces a pure tone of 1KHz, the wavelength of sound produced on air is?

Subject: Science, asked on 6/3/13

## a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?

Subject: Science, asked on 13/1/13

## what are the avantages and disadvantages of echo and reverberation?

Subject: Science, asked on 31/12/12

## what are the si unit of amplitude,freqency&wavelength

Subject: Science, asked on 2/1/13

## WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICESmicrophoneheadphonesolar batteryphotoelectric cellelectric cell

Subject: Science, asked on 16/3/15

## What is the necessary condition for a body to produce sound?

Subject: Science, asked on 18/11/10

## 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 .

Subject: Science, asked on 3/3/13

## SOUND IS A TRANSVERS WAVE. TRUE OR FALSE. PLEASE EXPLAINrnALSO PLEASE EXPLAIN TRANSVERSE WAVE AND LONGITUTIDNAL WAVE WITH DIAGRAMS AND EXAMPLES

Subject: Science, asked on 9/3/14

## I want to make a SUPW project please give me some simple ideas.

Subject: Science, asked on 17/2/15

## A longitudinal wave of wavelength 1cm travels in air with a speed of 330m/sec. Calculate the frequency of the wave. Can this wave be heard by a normal human.

Subject: Science, asked on 2/3/13

## write all formula's in chapter sound ... and defines...???

Subject: Science, asked on 13/10/16

## concept mind map on sound

Subject: Science, asked on 2/7/10

## What is reverberation? How can it be reduced?

Subject: Science, asked on 18/11/12

## a source of sound is placed at one end of an iron bar 2km long and 2 sounds are heard at the other end at an interval of 5.6 s. if the velocity of sound in air is 330m/s , find the time taken by sound to travel 2 km in iron and the velocity of sound in iron.

Subject: Science, asked on 28/12/12

## 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

Subject: Science, asked on 1/3/13

## A tuning fork is vibrating at a rate of 30720 times per minute. I f the velocity of sound is 332 m/s , calculate(a) the frequency of vibration in hertz(b) the wavelength of the wave produced.

Subject: Science, asked on 19/3/12

## establish the relationship between speed of sound, its wavelength and frequency?help!!!

Subject: Science, asked on 22/2/14

## Why does sound travel faster in Hydrogen than Oxygen?

Subject: Science, asked on 12/3/12

## state the laws of reflection of sound .explain three application based on these laws.

Subject: Science, asked on 19/2/18

## Which of the following is not a characteristic of sound ? (A) Pitch (B) Wavelength (C) Quality (D) Loudness

Subject: Science, asked on 14/3/14

## Define echo?Give its two applications.

Subject: Science, asked on 12/3/18

## Plese represent the graph 1)Two sound waves having same amplitude but different frequency. 2)Two sound waves different amplitude and also different wavelength. 3)Two sound wave having same frequency but different amplitude.

Subject: Science, asked on 11/3/12

## list three characteristics of sound waves. state the factors on which each of these characteristics depend...

Subject: Science, asked on 4/1/15

## why cant we hear the sound made by bats ?

Subject: Science, asked on 20/2/13

## what is an echo? what are the two conditions required to hear an echo?

Subject: Science, asked on 1/1/19

## A boy is playing with a ball on the roof of a building 480 m high from the ground. Suddenly the ball slips from his hand and falls into a well on the ground. The water level in the the well is 20m below the ground,and he hears the sound of the ball hitting after 11.5 sec from the instant of slip. The speed of sound in air is ( take g=10 m/s^2)

Subject: Science, asked on 3/2/12

## describe an experiment to show that sound cannot pass through vacuum?

Subject: Science, asked on 5/2/13

## sounds produced by girls are shrill than that of boys.why?

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