3 years ago

Bro what does this mean ? I don’t get this

Physics

2 answers:

Vedmedyk [2.9K]3 years ago

4 0

the atmosphere holds CO2, we can directly influence the ammount

zhannawk [14.2K]3 years ago

3 0

CO2 is carbon dioxide a colorless gas

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A loudspeaker has a circular opening with a radius of 0.1158 m. The electrical power needed to operate the speaker is 27.0 W. Th

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Answer:

electrical power is converted by the speaker into sound power 17.25 %

Explanation:

given data

radius = 0.1158 m

power needed = 27.0 W

average sound intensity = 25.6 W/m²

solution

we know sound intensity that is

I = $\frac{power}{area}$ ...................1

power = intensity × area

Power = 25.6 × 4 ×π×r²

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power = 4.313 W

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Two bicyclists were riding their bikes at a rate of 20 kilometers per hour (km/h). During the next half hour, they observed that

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A concave mirror produces a real image that is three times as large as the object. If the object is 20 cm in front of the mirror

TiliK225 [7]

Answer:

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v = Image distance

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