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3 years ago

How many chirps will a snowy tree cricket give is 21 seconds at a temperature of 22 degree celcius

1 answer:

Studentka2010 [4]3 years ago

7 0

There is an established correlation between the number of chirps of a cricket and temperature. The function is
ln C = -6713.2 / T + 25.868

Where c is the number of chirps per min and T is the temperature in K
We are given
T = 22 C + 273 = 295K

Solving for C
ln C = -6713.2 / 295 + 25.868
C = 22.45 chirps/min

In 21 seconds, the number of chips is
22.45 chirps / min (1 min/60 s) (21 s) = 7.86 chirps <span />

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2 years ago

The generator at a power plant produces AC at 20,000 V. A transformer steps this up to 355,000 V for transmission over power lin

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Answer:

Number of coil in the output is 39938

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We have given a step up transformer

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Number of turns in primary $N_p=2250$

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2 years ago

A soccer ball with a mass of 0.45 kg is rolling with a momentum of 9 kg*m/s, what is it's velocity?

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