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2 years ago

11

the velocity of a sound on a particular day outside is 331 meters/second. what is the frequency of a tone if it has a wavelength

of 0.6 meters?

1 answer:

hichkok12 [17]2 years ago

3 0

Wavelength*frequency=velocity
(331m/s)/(.6m)
Frequency = 551.666 1/s

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traslation:

Pentru a găsi valorile eficienței motorului, utilizați următoarea formulă:

P_o: putere de ieșire = 864J / 0.5min = 864J / 30s = 28.8W

P_i: putere de intrare = I * V = (3A) (12V) = 36W

Înlocuind aceste valori obțineți:

prin urmare, eficiența motorului este de aproximativ 96%

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