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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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melomori [17]

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4 0
2 years ago
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What types of energy do you acquire when you eat a bowl of hot vegetable soup?
Aleksandr-060686 [28]

Answer:

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8 0
2 years ago
The route followed by a hiker consists of three displacement vectors A with arrow, B with arrow, and C with arrow. Vector A with
kotykmax [81]

Answer:

D_{B}=1173.98m\\D_{C}=675.29m

Explanation:

If we express all of the cordinates in their rectangular form we get:

A = (1404.77 , 655.06) m

B = A + ( -D_{B} *sin(41) , -D_{B} * cos(41) )

C = A + B + ( -D_{C} *cos(20) , D_{C} * sin(20) )

Since we need C to be (0,0) we stablish that:

C = (0,0) = A + B + ( -D_{C} *cos(20) , D_{C} * sin(20) )

That way we make an equation system from both X and Y coordinates:

A_{x} + B_{x} + C_{x} = 0

A_{y} + B_{y} + C_{y} = 0

Replacing values:

1404.77 - D_{B}*sin(41) - D_{C}*cos(20) = 0

655.06 - D_{B}*cos(41) + D_{C}*sin(20) = 0

With this system we can solve for both Db and Dc and get the answers to the question:

D_{B}=1173.98m

D_{C}=675.29m

7 0
3 years ago
If the cd rotates clockwise at 500 rpm (revolutions per minute) while the last song is playing, and then spins down to zero angu
Katen [24]

The solution for this problem is:

500 revolution per minute = 8.33rev /s = 2π*8.33 rad /s = 52.36 rad /s 

Angular velocity ω = 2π N

Angular acceleration α= (ω2 - ω1) /t

ω2 = 0

α = - ω1/t = -2π N /t

N = 500 rpm = 8.33 r p s.

α = -2π 8.33 /2.6 =- 20 rad/s^2

3 0
3 years ago
Find the geometric mean of 7 and 25​
lana [24]

Answer:

it's sqrt 175 which is pretty close to 14(sqrt 176)

Explanation:

geo mean is a*b

then square rooted

to get the mean

7 0
3 years ago
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