Light travels at a speed which is about a million times faster than the speed of sound.In one second,light travels about 300,000km.But sound travels only 344m.You can get some idea of this difference by watching the start of a race.If you stand some
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 20:21:44
![Light travels at a speed which is about a million times faster than the speed of sound.In one second,light travels about 300,000km.But sound travels only 344m.You can get some idea of this difference by watching the start of a race.If you stand some](/uploads/image/z/7896329-17-9.jpg?t=Light+travels+at+a+speed+which+is+about+a+million+times+faster+than+the+speed+of+sound.In+one+second%2Clight+travels+about+300%2C000km.But+sound+travels+only+344m.You+can+get+some+idea+of+this+difference+by+watching+the+start+of+a+race.If+you+stand+some)
xTNX~+6LDfQiv,&ؑ4@i3b'!$ޥ&+4"9>|?gJyei.ӘS<*љZ*Sh
e2(r46su
sU_2Q*$S)%J՟/zBMxQT,<"gFkꠖ5r9ns3Y*
3/Rl-9V.CfW=FVe9*NTGGhqH