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xxTIMURxx [149]
2 years ago
15

As demonstrated by the Doppler Effect, why does sound increase in pitch as a sound source approaches you?

Physics
2 answers:
mixas84 [53]2 years ago
6 0

Answer: D

Explanation: I took the test

scZoUnD [109]2 years ago
3 0
I think so it ans wold be d.because if the source approaches the observer more and more wavefront will pass and it get squeezed.so wavelength decreases and frequency increases.
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How does the number of each type of particle in a sodium ion compare with the number of each type of particle in a sodium atom?
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<h3><u>Answer and explanation;</u></h3>
  • <u><em>A neutral sodium atom contains 11 protons, 12 neutrons and 11 electrons. By removing an electron from this atom we get a positively charged Na+ ion that has a net charge of +1.</em></u> Thus; Sodium atom is neutral whereas sodium ion is a charged species with a charge of +1.
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3 0
3 years ago
What does the m stand for in the enthalpy equation?
Morgarella [4.7K]

Answer:

Use the formula ∆H = m x s x ∆T to solve.

Explanation:

Once you have m, the mass of your reactants, s, the specific heat of your product, and ∆T, the temperature change from your reaction, you are prepared to find the enthalpy of reaction. Simply plug your values into the formula ∆H = m x s x ∆T and multiply to solve.

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2 years ago
What are the benefits and dangers of visual light waves
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5 0
2 years ago
In a young's double-slit experiment, the angle that locates the second dark fringe on either side of the central bright fringe i
dem82 [27]

Answer:

(d/λ) = 17.67

Explanation:

Equation for double-slit:

d*sinθ = m*λ

Rearrange the equation

(d/λ) = m/(sinθ)

Since it is at the second dark fringe, m = 2

Therefore:

(d/λ) = 2/(sin(6.5)

(d/λ) = 17.67

6 0
3 years ago
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Answer:

it is letter C

there is a video explaining this

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3 years ago
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