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JulsSmile [24]
3 years ago
9

Calculate the velocity of a sound wave if the frequency is 5 E 5 Hz and the wavelength is 0.001 m.

Physics
1 answer:
svp [43]3 years ago
6 0

Answer: 3 cm. ... mass per unit length of 0.05 kg/m and a tension of 80 N has an amplitude of 5 cm. ... W2 28 °s The wave function for a harmonic wave on a string is y(x, t) = (0.001 m) ... (a) What average power is transmitted along the wire if the frequency is 400 Hz? (b) ...

Explanation:

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The number of significant figures in the measurement 4.300×10^5 km are​
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Answer:

6

Explanation

Any numbers in scientific notation are considered significant. For example, 4.300 x 10-4 has 4 significant figures.

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3 years ago
Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 × 10-7 W/m2. Another
Tanya [424]

Answer:I_2=0.618\times 10^{-7} W/m^2

Explanation:

Given

Distance between source and  receiver d_1=3 m

Sound Intensity I_1=1.1\times 10^{-7} W/m^2

Distance of of second observer d_2=4 m

Intensity varies as

I\propto \frac{1}{d^2}

using this

I=\frac{k}{d^2}

\frac{I_1}{I_2}=\frac{d_2^2}{d_1^2}

\frac{1.1\times 10^{-7}}{I_2}=\frac{4^2}{3^2}

I_2=0.75^2\times 1.1\times 10^{-7}

I_2=0.618\times 10^{-7} W/m^2

     

6 0
3 years ago
80 POINT!!!!! IT'S WORTH IT!!!!!
alexandr402 [8]

because blah blah blah blah

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3 years ago
How do you know the speed of an electromagnetic wave in a vacuum?
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Hope this helps you (:
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