A boy shouts loudly into an empty well that is 33m deep. After how long will he hear the echo? (Speed of sound in air 330 m/s)
Answers
Explanation:
ANSWER
ANSWERLet d be the distance of body from water level in well (depth of water level) , therefore total distance travelled by sound wave , =2d , as the wave comes back after reflection so the distance will be doubled .
ANSWERLet d be the distance of body from water level in well (depth of water level) , therefore total distance travelled by sound wave , =2d , as the wave comes back after reflection so the distance will be doubled .Now given , v=340m/s,t=0.4s ,
ANSWERLet d be the distance of body from water level in well (depth of water level) , therefore total distance travelled by sound wave , =2d , as the wave comes back after reflection so the distance will be doubled .Now given , v=340m/s,t=0.4s ,therefore , by , total distance =velocity × total time
ANSWERLet d be the distance of body from water level in well (depth of water level) , therefore total distance travelled by sound wave , =2d , as the wave comes back after reflection so the distance will be doubled .Now given , v=340m/s,t=0.4s ,therefore , by , total distance =velocity × total time 2d=v×t ,
ANSWERLet d be the distance of body from water level in well (depth of water level) , therefore total distance travelled by sound wave , =2d , as the wave comes back after reflection so the distance will be doubled .Now given , v=340m/s,t=0.4s ,therefore , by , total distance =velocity × total time 2d=v×t ,or d=v×t/2=340×0.4/2=68m
Answer:
136
Explanation:
speed of sound is 340
time is 0.4 sec
therefore water level is 340×0.4= 136