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-Dominant- [34]

3 years ago

11

Sound waves can be modeled by the equation of the form y=20sin(3t+theta). Determine what type of interference results when sound

waves modeled by the equations y=20sin(3t+90) and y=20sin(3t+270) are combined.

1 answer:

Mariulka [41]3 years ago

4 0

Answer:

go to the link quizzlet it will give you tha answer

Explanation:

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A Morrison’s fuel truck is traveling at a speed of 5 miles per hour for 5 minutes what distance does it travel?

madam [21]

Answer: 2,200 feet

<u>Explanation:</u>

Use the following conversions: 1 mile = 5280 feet, 1 hour = 60 minutes

$\dfrac{5\ miles}{1\ hour}\times \dfrac{5280\ ft}{1\ mile}\times \dfrac{1\ hour}{60\ min}\times 5\ min=\dfrac{132,000}{60}ft=\large\boxed{2,200\ ft}$

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3 years ago

On a wave, the distance between two points that have identical status is termed by ______

Sedaia [141]

D wavelength

velocity deals w/ speed
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3 years ago

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What does it mean standard unit?

Goshia [24]

Answer:

<h3>Standard unit is a standard measure that remains the same whenever, wherever and by whoever it is used. eg: The standard unit of time is second.</h3>

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3 years ago

You drop a 30 g pebble down a well. You hear a splash 2.7 s later. Ignoring air resistance, how deep is the well? Assume g = 9.8

lys-0071 [83]

I will assume here that the well is sufficiently short so that the time the sound takes to come from the bottom of the well to our ear is negligible.

Since the pebble moves by uniformly accelerated motion, the distance it covers is given by
$S= \frac{1}{2}gt^2$
where
$g=9.81 m/s^2$ is the gravitational acceleration
$t=2.7 s$ is the time the pebble takes to reach the bottom of the well

Therefore, the depth of the well is
$S= \frac{1}{2}(9.81 m/s^2)(2.7 s)^2 = 35.7 m \sim 36 m$
and the correct answer is B.

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3 years ago

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insens350 [35]

Answer:

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Explanation:

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3 years ago