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lianna [129]
3 years ago
10

How does the wavelength of a sound affect the way it moves around corners

Physics
1 answer:
djyliett [7]3 years ago
8 0
This is the diffraction. The longer the wavelength, the wider it spread. (The greater angle of the sector pattern formed)
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Get your numbers gathered up and solve the problem in the ordered step
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Select the three words in the following sentence that indicate it is in the third person.
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A student practicing for a cross country meet runs 250 m in 30 s. What is the average speed
Kaylis [27]

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SIZIF [17.4K]

Answer:

D

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6 0
3 years ago
The knee extensors insert on the tibia at an angle of 30 degrees (from the longitudinal axis of the tibia), at a distance of 3 c
Reika [66]

Answer:

the knee extensors must exert 15.87 N

Explanation:

Given the data in the question;

mass m = 4.5 kg

radius of gyration k = 23 cm = 0.23 m

angle ∅ = 30°

∝ = 1 rad/s²

distance of 3 cm from the axis of rotation at the knee r = 3 cm = 0.03 m

using the expression;

ζ = I∝

ζ = mk²∝

we substitute

ζ = 4.5 × (0.23)² × 1

ζ  = 0.23805 N-m

so

from; ζ = rFsin∅

F = ζ / rsin∅

we substitute

F = 0.23805 / (0.03 × sin( 30 ° )

F = 0.23805 / (0.03 × 0.5)

F F = 0.23805 / 0.015

F = 15.87 N

Therefore, the knee extensors must exert 15.87 N

7 0
2 years ago
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