Question

give resons ;

i) a person,pressing his ear on the railway tracks can hear an approching train.

ii) astroanuts through taking,sound cannot be heard on moon..

pls ans to this question ​

Answer 1

i because sound flow faster in solid

ii because there was no form of transportation of sound

Answer 2

i) a person,pressing his ear on the railway tracks can hear an approching train.

Ans. because the speed of sound is faster in solids

ii) astroanuts through taking,sound cannot be heard on moon..

Ans. sound need a medium in which the molecule are tightly packed . on moon there is no medium