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1 year ago

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

Physics

2 answers:

mixas84 [53]1 year ago

6 0

Answer: D

Explanation: I took the test

scZoUnD [109]1 year 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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Which of the following describes an element?

saw5 [17]

Answer:

Matter made up of only one type of atom.

Explanation:

Please mark brainliest.

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1 year ago

Two charges are in the configuration indicated here. The first charge, Q1 = –1.00 μC, sits at the origin. The second charge, Q2

blagie [28]

Answer:

$E_{net} = 3.6 \times 10^4 N/C$

Explanation:

As the two charges Q1 and Q2 are placed at some distance apart

so the electric field at mid point will be twice the electric field due to one charge

Because here the two charges are of opposite sign so here the electric field at mid point will be added due to both

so here we have

$E_{net} = 2E$

$E_{net} = 2(\frac{kQ}{r^2})$

distance of mid point from one charge is given as

$r = \frac{\sqrt{1^2 + 1^2}}{2}$

$E_{net} = 2 (\frac{(9\times 10^9)(1\times 10^{-6})}{(\frac{1}{\sqrt2})^2}$

$E_{net} = 3.6 \times 10^4 N/C$

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2 years ago

The speedometer in your car reads 55 mi/h. This represents the _____ of the car.

creativ13 [48]

The mileage of the car how fast it is going

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2 years ago

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Note that the pattern of magnetic field lines surrounding a bar magnet is similar to that of the electric field around an electr

lana66690 [7]

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2 years ago

Why are power cords coated with a material that has different physical properties than the wire inside?

Sergeeva-Olga [200]

Power cords are conductors and are covered by insulators. If they were not, then it would be easy to create a short-circuit. It would also be not safe, as a person touching the bare wires would be electricuted.

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2 years ago