An ant on a picnic table travels 20 cm eastward then 25 cm northward 5 cm westward and finally 10 cm northward what is the ants
1 answer:
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Answer:
f = 409.6 Hz, the woman hears a higher frequency sound
Explanation:
This is a Doppler effect problem, which is described by the equation for the case of a fixed observer
f = fo
where the negative sign is for the source approaching the observer
in this case the car is the one that emits the sound and moves away from the intersection
let's calculate
f = 400
f = 409.6 Hz
therefore the woman hears a higher frequency sound
Answer:
N/l = 104
Explanation:
Energy stored in the inductor is given by the formula
now we have
now we have
now we have
now winding density is turns per unit length