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Lorico [155]
3 years ago
5

Which statement is true of a wave that’s propagating along the pavement and girders of a suspension bridge?

Physics
2 answers:
alexandr1967 [171]3 years ago
8 0
The statement which is true of a wave that’s propagating along the pavement and girders of a suspension bridge is A. The wave is mechanical, with particles vibrating in a direction that is parallel to that of the wave, forming compressions and rarefactions.
sergey [27]3 years ago
5 0
The answer to this question is A
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3 years ago
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A violin with string length 32 cm and string density 1.5 g/cm resonates in its fundamental with the first overtone of a 2.0-m or
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Answer:

T=1022.42 N

Explanation:

Given that

l = 32 cm ,μ = 1.5 g/cm

L =2 m  ,V= 344 m/s

The pipe is closed so n= 3 ,for first over tone

f=\dfrac{nV}{4L}

f=\dfrac{3\times 344}{4\times 2}

f= 129 Hz

The tension in the string given as

T = f²(4l²) μ

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T = 129² x (4 x 0.32²)  x 1.5 x  10⁻³ x 100

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6 0
3 years ago
An object experiences an acceleration of 8.5 m/s^2 over a distance of 300 m. After that acceleration it has a velocity of 400 m/
Snezhnost [94]

Answer:

393.6m/s

Explanation:

Given parameters:

Acceleration  = 8.5m/s²

Distance  = 300m

Final velocity  = 400m/s

Unknown:

Initial velocity  = ?

Solution:

To solve this problem, we use the expression below;

             v² = u²  + 2as

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance

      So;

               v²  - 2as = u²

        u²   = v²   - 2as

        u²  = 400²   - (2 x 8.5 x 300)  

         u   = 393.6m/s

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3 years ago
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Answer:A C E

Explanation:

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3 years ago
For how long should a force of 100N act on a body of mass 20kg at rest so that it acquires a velocity of 100m/s?​
julia-pushkina [17]

Answer:

20 seconds

Explanation:

7 0
3 years ago
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