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avanturin [10]
2 years ago
9

A tuning fork is sounded above an adjustable length resonating tube (one end closed), which resonates at a length of 0. 250 m an

d again at 0. 750 m. What is the frequency of the fork when the speed of sound is taken to be 340 m/s?.
SAT
1 answer:
Eva8 [605]2 years ago
3 0

The frequency of the fork when the speed of sound is taken to be; 680 Hz.

<h3>Frequency of a wave</h3>

From the given question;

  • We can determine the wavelength of the sound wave produced by the tuning fork by evaluating the distance between the two reasonance points.

Hence, wavelength, = 0.750m - 0.250m

  • Wavelength = 0.50m

Hence, the frequency of the fork when the speed of sound is taken to 340 m/s is

  • Frequency = Speed/wavelength

  • Frequency = 340/0.5

  • Frequency = 680 Hz.

Read more on frequency of a sound wave;

brainly.com/question/81396

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Explanation:

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5. how long is the deck of the bridge? show how you calculated r. (3 points: 2 points for work, 1 point for the solution)
Svetlanka [38]

Based on the construction, the length of the bridge deck is given by r = √(x² + y²) units.

<h3>What is a deck?</h3>

A deck is also referred to as the roadway and it can be defined as the functional area which is designed and developed to allow automobile vehicles and pedestrians to cross highways, valleys, and water bodies.

In order to determine the length of the bridge deck, we would apply Pythagorean's theorem as follows:

r² = x² + y²

<u>Where:</u>

  • r is the length of the bridge deck.
  • a is the adjacent side (horizontal distance).
  • b is the opposite side (rise of the bridge).

Making r the subject of formula, we have:

r = √(x² + y²)

Read more on Pythagorean theorem here: brainly.com/question/16176867

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6 0
3 years ago
Mr. and Mrs. Ruel has 20 daughters and each daughter has one brother. How many people are in the Ruel family? Will give the answ
antoniya [11.8K]

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the mom, the dad, the 20 sisters and the one brother

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We have two containers with an identical amount of gas in each. One gas is helium, the other is ammonia. Which would you expect
alexandr1967 [171]

The gas with a higher pressure is  <u>Helium </u>

<h3 /><h3>Calculating the pressure exerted by the gases</h3>

Given that temperature and volume is held constant the pressure of a given gas can be calculated as : P = n because for a constant volume and temperature the pressure of a given gas is directly proportional to the number of moles of contained in the gas.

<u>Pressure of </u><u>Helium </u>

P = n

where n ( number of moles ) = mass of helium / molar mass

                                               = 52 / 4 = 13 moles

<u>Pressure of</u><u> Ammonia </u>

P = n

where n ( number of moles ) = mass  / molar mass of ammonia

                                                = 73 / 17.03

                                                = 4.29 moles

From the calculations above the gas with a higher pressure is Helium.

Learn more about gas pressure : brainly.com/question/25736513

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2 years ago
maria is staying at a hotel that charges $99.95 per night plus tax for a room. a tax of 8% is applied to the room rate, and an a
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