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dem82 [27]
3 years ago
14

How does the Doppler effect cause a siren's pitch to increase as it

Physics
1 answer:
Likurg_2 [28]3 years ago
5 0

Answer:

Sound waves are pushed closer together, decreasing wavelength

and increasing frequency.

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An inductor with L = 9.80 mH is connected across an ac source that has voltage amplitude 41.5 V . What value for the frequency o
sashaice [31]

Answer:

149.8Hz

Explanation:

V=I.(XL).........{1}

where (XL) is inductive reactance

(XL) =2πfL......... {2}

V= 41.5, l= 4.5, L= 9.8* 10^-³

take π to be 3.14

(XL) = V/I

= 41.5/4.5

= 9.22

f = (XL) /2πL

= 9.22* 10^³/6.28* 9.8

=149.8

7 0
3 years ago
A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potentia
just olya [345]
This statement about the potential due to the sphere is correct: THE POTENTIAL IS HIGHEST AT THE CENTER OF THE SPHERE.
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7 0
4 years ago
A student claims an object in motion must experience a force to stay in motion. Do you agree or disagree?
Vikki [24]

Answer:

agree because there is always a force that causes motion..

4 0
3 years ago
¿CUAL ES LA CAUSA DE UNA ONDA ESTACIONARIA?
xxTIMURxx [149]
Fenomeno de resonancia.

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3 years ago
A student measure the length of a laboratory bench with a meter ruler. Which of the following values is the most approbriate way
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Well a meter stick has increments of a centimeter, and since 1 cm=0.01m he should record it as 4.02m(b)

Explanation:

8 0
3 years ago
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