S = d/t
s = 1396/4 = 349m/s
Answer:
57.17 Hz 114.34 Hz 285 Hz
Explanation:
The distance between the men and 1 speaker = 3.5 m
Distance between the men and second speaker = 10-3.5= 6.5 m
Here at this point there will be no sound so there will be destructive interference
Path difference
We know that for destructive interference
here v is the speed of sound in air
So for m =0
for m =1
for m=2
Answer:
Potential energy is transfer to kinetic energy,
If radio active substance is decayed.
Answer:
work done will be equal to 305.05 J
Explanation:
We have given force exerted F = 45 N
Angle with the horizontal
Distance moved due to exerted force d = 9.1 m
Work done is equal to , here F is force is angle with horizontal and d is distance moved due to force
So work done
So work done will be equal to 305.05 J
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