Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 19 cm apart. The sound intensity d

Question

Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 19 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 29 cm.

What is the wavelength of the sound?

If the distance between the speakers continues to increase, at what separation will the sound intensity again be a maximum?
Express your answer using two significant figures.

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Vân Khánh 3 years 2021-08-27T09:04:00+00:00 1 Answers 3 views 0

Answers ( )

    0
    2021-08-27T09:05:41+00:00

    Answer:

    a.96cm

    b.77cm

    Explanation:

    Highest intensity,d_1=19cm

    Lowest intensity,d_2=29cm

    d_1+d_2=19+29=48cm  

    48cm is the distance for half-wave, wavelength =48cm*2=96cm

    b. From a, above we know that half-wavelength is 48cm

    Also, the distance of known  maximum is 29cm

    Next maximum is calculated as:

    Next \m\aximum=Last \ Maximum+ \ 0.5Wavelength\\=29cm+48cm\\=77cm

    The next maximum will occur at 77cm

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