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3 years ago

?

Physics

2 answers:

vovangra [49]3 years ago

8 0

Can you please post the picture of the graph and i will gladly answers it.

lukranit [14]3 years ago

4 0

It is -2 m/s2 for particle A and -0.50 m/s2 for particle B.

CORRECT FOR PLATO

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An audio engineer takes decibel readings at distances of r1 = 13 m and r2 = 24 m from a concert stage speaker during a sound che

N76 [4]

Answer

given,

Distance for decibel reading

r₁ = 13 m

r₂ = 24 m

When the engineer is at r₁ reading is β₁ = 101 dB

now, Calculating the Intensity at r₁

Using formula

$\beta = 10 log(\dfrac{I}{I_0})$

I₀ = 10⁻¹² W/m²

now inserting the given values

$101= 10 log(\dfrac{I}{10^{-12}})$

$10.1= log(\dfrac{I}{10^{-12}})$

$\dfrac{I}{10^{-12}}= 10^{10.1}$

$I =10^{10.1} \times 10^{-12}$

I = 0.01258 W/m²

now, calculating power at r₁

P₁ = I₁ A₁

P₁ = 0.01258 x 4 π r²

P₁ = 0.01258 x 4 π x 13²

P₁ = 26.72 W

7 0

3 years ago

A 40.0-μFcapacitor is connected across a 60.0 Hz generator. An inductor is then connected in parallel with the capacitor. What i

amm1812

Answer:

The value of the inductance is 175.9 mH.

Explanation:

Given that,

Capacitor $C= 40.0\ \muF$

Frequency = 60.0 Hz

The inductor and capacitor is connected in parallel, the voltage across each of these elements is the same.

We have,

$V_{L}=V_{C}$

Using ohm's law

$I_{rms}\times X_{L}=I_{rms}\times X_{C}$

$X_{L}=X_{C}$

$2\pi f L=\dfrac{1}{2\pi f C}$

$L=\dfrac{1}{4\pi^2\times f^2\times C}$

Put the value into the formula

$L=\dfrac{1}{4\times\pi^2\times60.0^2\times40\times10^{-6}}$

$L=0.1759\ H$

$L=175.9\times10^{-3}\ H$

$L=175.9\ mH$

Hence, The value of the inductance is 175.9 mH.

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4 years ago

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gulaghasi [49]

Explanation:

Hi Linda,

How's it going?

Sorry I haven't been in touch for such a long time but I've had exams so I've been studying every free minute. Anyway, I'd love to hear all your news and I'm hoping we can get together soon to catch up. We just moved to a bigger flat so maybe you can come and visit one weekend?

How's the new job?

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Cuantos CM son 8 newtons

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