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2 years ago

As you increase altitude, air pressure increases. a. True b. False

1 answer:

6 0

B. False

<span>As you increase altitude, air pressure actually reduces. The air thins out as increase in altitude and hence it weight or pressure reduces. </span>

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3. A car does an emergency stop from 144 km\h in 4s<br> What was its deceleration?

strojnjashka [21]

Answer:

36?

Explanation:

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2 years ago

Fill in the correct answers. A big wheel with twice the circumference of a small wheel will rotate with ____ the force and ___ t

Lina20 [59]

Answer:

Explanation:

""""""" Twice,Half """"""

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2 years ago

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single goose sounds a loud warning when an intruder enters the farmyard. Some distance from the goose, you measure the sound lev

Goryan [66]

Answer:

The sound level of the 26 geese is $Z_{26}= 96.15 dB$

Explanation:

From the question we are told that

The sound level is $Z_1 = 81.0 \ dB$

The number of geese is $N = 26$

Generally the intensity level of sound is mathematically represented as

The intensity of sound level in dB for one goose is mathematically represented as

$Z_1 = 10 log [\frac{I}{I_O} ]$

Where I_o is the threshold level of intensity with value $I_o = 1*10^{-12} \ W/m^2$

$I$ is the intensity for one goose in $W/m^2$

For 26 geese the intensity would be

$I_{26} = 26 * I$

Then the intensity of 26 geese in dB is

$Z_{26} = 10 log[\frac{26 I }{I_o} ]$

$Z_{26} = 10 log (\ \ 26 * [\frac{ I }{I_o} ]\ \ )$

$Z_{26} = 10 log (\ \ 26 \ \ ) * (\ \ 10 log [\frac{ I }{I_o} ]\ \ )$

From the law of logarithm we have that

$Z_{26} = 10 log 26 + 10 log [\frac{I}{I_0} ]$

$= 14.15 + 82$

$Z_{26}= 96.15 dB$

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2 years ago

your neighbour is throttling his recent bought motorbike to show off. the sound intensity measured at your window 16m away is 0.

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Answer:

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3 years ago

A 1.5m wire carries a 7 A current when a potential difference of 87 V is applied. What is the resistance of the wire?

kramer

Answer:

Ohm's law states that I=V/R (Current=volts divided by resistance). Since we're looking for resistance, we'll rewrite it as R=V/I. Then just plug in the numbers; R=84/9, R= 9 1/3 or 28/3. The resistance of the wire is 9.33... or 9 1/3 ohm's, depending on how you wanna write it.

Hope it helped u if yes mark me BRAINLIEST!

Tysm!

I would appreciate it!

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2 years ago

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