1 ) At a baseball game, a spectator is 60.0 m away from the batter. How long doe
ID: 2010449 • Letter: 1
Question
1 ) At a baseball game, a spectator is 60.0 m away from the batter. How long does it take the sound of the bat connecting with the ball to travel to the spectator's ears? The air temperature is 25.0° C.2 ) A lightning flash is seen in the sky and 8.3 s later the boom of the thunder is heard. The temperature of the air is 24° C.
(a) What is the speed of sound at that temperature? [Hint: Light is an electromagnetic wave that travels at a speed of 3.00 108 m/s.]
(b) How far away is the lightning strike?
Explanation / Answer
1 .
t = distacne/ speed = 60 / 346 = 0.1734 s <------ans
since speed of sound at 25 C = 346 m /s ;
2 .
c = 331.3 ( 1 + C / 273.14 )
C is temperarue in degree C ,
putting C = 24 ,
( a ) c = 345.548 m /s ; <----------ans
at 24 C , speed of sound = 345.549 m /s ;
d / 345.548 - d / ( 3 e 8 ) = 8.3 ;
( b ) or d = 2868.0600 m <-------distance of the cloud ,
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