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1. Why are temple bells made of large size?
momix
8 Explain why sound travels faster in warm air than in cool air ?
9. Explosion on other planets are not heard on earth. Explain why?
10) Calculate velocity of sound in mixture of 1 mole He and 1 mole O, at 127°C.
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Answers
Answer:
1. to increase the volume of sound
8. due to kinetic energy
9. due to gravity
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Answer:
1) Temple Bells are made larger because that increases the area of them, and amplitude of sound increases when area of the vibrating object is increased so we hear a loud sound.
9) Explosions on other planets are not heard because in between earth and another planet, there is vaccum and since sound is medium dependant so sound does not travel in vaccum and therefore is not heard.
10) Sound travels faster in warm air and slower in cool air because in cool air ,movement of particles get deceased since kinetic energy is directly proportional to temperature so when the particle travel slower, sound also travels slower because is nothing but vibration so when particles travel slower, vibration also are less and thus is the speed of sound. This can be better understood with a diagram which I won't give because I am getting only 5 points.