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I'm not really sure but I do know that it's not 0 because the object is still moving, even if it's only moving at 1 m/s.
Answer:
option (b)
Explanation:
Io = 10^-12 w/m^2
In Case I:
dB = 80 dB
The formula for the intensity of sound
... (1)
In Case II:
dB = 60 dB
The formula for the intensity of sound
... (2)
So, by equation 2 and 1 we get
Thus, the intensity of sound is 100 times lower.
Answer: in a medium
Explanation:
Mechanical waves require medium to transfer energy. The medium particles vibrate about their fixed position to transfer energy. There is no transport of medium particles.
Example, sound waves are mechanical waves. The sound travels through compression and rarefaction of the medium particles.