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pishuonlain [190]
3 years ago
13

4. There are two tree frogs that have different proteins in their cells for tongue length. They have

Physics
1 answer:
Gnom [1K]3 years ago
6 0

Answer:

Kdsjusddmmdjdjdwkwksijdff

Explanation:

Ccdsjdhdhdjdjdjdjdjdjdjjdjdjdjjdjdj

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How long have advances in astronomy been occurring? Only for the past few years
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Advances in Astronomy have been occurring for at least the past two millennia (2000 years).  Maybe longer.

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How does Doppler ultrasound technology differ from ultrasound technology
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. Doppler ultrasound is based on absorption of sound, and other

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Explanation:

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A plane flying against a jet stream will travel faster than a plane traveling with a jet stream.
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Two identical loudspeakers are placed on a wall 1.00 m apart. A listener stands 4.00 m from the wall directly in front of one of
natita [175]

Answer:

The phase difference is 0.659 rad.

Explanation:

Given that,

Distance between two identical loudspeakers d= 1.00  m

Distance between speakers and listener r= 4.00 m

Frequency = 300 Hz

Suppose we need to find the phase difference in radian between the waves from the speakers when they reach the observer

We need to calculate the r'

Using Pythagorean theorem

r'=\sqrt{d^2+r^2}

Where, d = distance between two identical loudspeakers

r = distance between speakers and listener

Put the value into the formula

r'=\sqrt{(1.00)^2+(4.00)^2}

r'=\sqrt{1.00+16.00}

r'=4.12\ m

We need to calculate the path difference

Using formula of path difference

|r'-r|=4.12-4.00

|r'-r|=0.12\ m

We need to calculate the wavelength

Using formula of wavelength

\lambda=\dfrac{v}{f}

Where, v = speed of sound

f = frequency

Put the value into the formula

\lambda=\dfrac{343}{300}

\lambda=1.143\ m

We need to calculate the phase difference

Using formula of phase difference

\phi=\dfrac{2\pi\times|r'-r| }{\lambda}

\phi=\dfrac{2\pi\times0.12}{1.143}

\phi=0.659\ rad

Hence, The phase difference is 0.659 rad.

7 0
3 years ago
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