The full moon rises in the east at the time of sunset. After rising, it continuously moves to the west and is seen high in the s
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Answer:
481 m
Explanation:
To fall 235 m, the time required is
t = √(2H/g)
t= √(2235/9.8)
t=6.92 seconds.
The supplies will travel forward
6.92 69.4 ≈ 481 m
Therefore, the goods must be dropped 481 m in advance of the recipients.
Sound level at distance of 15 m is given as 20 dB
so intensity at this distance is given as
now if we move closer to some some distance the sound level is now 50 dB
now the intensity is given as
now we know that
so now the distance from friend must be 47 cm