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n200080 [17]
3 years ago
9

A car travels at 20km/h for 60 mins how far does it travel

Physics
1 answer:
r-ruslan [8.4K]3 years ago
8 0

Answer:

20km

Explanation:

20km/h means that for every 1h, the car traves 20km. 1h is 60 minutes so for every 60 minutes, the car travels 20km. Thus, it would travel 20km for 60 minutes.

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Two loudspeakers placed 8.0 m apart are driven in phase by an audio oscillator whose frequency range is 2.2 kHz to 2.9 kHz. A po
My name is Ann [436]

Answer:

The answer to the question is 2.2khz

Explanation:

<em>Let z₁ = 5.4m</em>

<em>Let z₂ = 4.6m</em>

<em>The path difference Δz = z₁-z₂ = 5.4 - 4.6 = 0.8m</em>

<em>For the interference= Δz λ, 2λ, 3λ......</em>

<em>The wavelength λ = 0.8m</em>

<em>The speed of sound v = 344m/s</em>

<em>The frequency f = v/λ = 344/0.8 = 430hz</em>

<em>Now,</em>

<em>f₁ =f, f₂= 2f, f₃ = 3f, f₄= 4f, f₅ =5f which is,</em>

<em>f₁ =f = 430Hz, f₂=2f =860Hz, f₃ =3f =1290Hz f₄ =4f =1720Hz and f₅=5f =2150Hz</em>

<em>f5 = 2120Hz = 2.200Hz </em>

<em>we will convert to two significant figures =2.2kHz</em>

<em> </em>

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Part of the plant that isresponsible for the transport of water from the roots to the leaves​
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Answer:

if you mean *responsible* for the transport of water from the roots to leaves is Xylem

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