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dolphi86 [110]
3 years ago
13

What is the speed of a car in meters per second when it is moving at 100km/h?

Physics
1 answer:
Marina CMI [18]3 years ago
6 0
You could transfer km to m by * 1000
and hour to second by * 3600
so now 100*1000/3600 = 28 metres per second(approximately)
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Which description best matches the image below of a hand that is using the right-hand palm rule?
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Answer:

When reviewing the results, the correct one is C

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The sound level at a distance of 2.30 m from a source is 115 dB. At what distance will the sound level have the following values
Aleksandr [31]

Answer:

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Explanation:

Given data

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source β = 115 dB

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solution

first we calculate here power and intensity and with this power and intensity we will find distance

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put here value (I/I_{0}) = 10^−12 W/m² and  β = 115

115  = 10 log(I/10^−12)

so

I = 0.316228 W/m²

and we know power = intensity × 4π r²    ...............b

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so by equation b

power = intensity × 4π r²

21.021604 = 0.01 × 4π r²

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and

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power = intensity × 4π r²

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r = 409004.412465 m = 409 km

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Semenov [28]

Answer:

it bc the adults are bigger then us kid so when they dip in the pool it makes bigger splashes

Explanation:

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