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marusya05 [52]
3 years ago
14

if the frequency of a sound wave in air remains constant, its energy can be varied by changing its what

Physics
2 answers:
Anastaziya [24]3 years ago
6 0
Amplitude, is the answer to the question
Alex Ar [27]3 years ago
3 0

by changing its amplitude!
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A flat square plate of side 20cm moves over other similar plate with a thin layer of 0.4cm of a liquid between them with force 1
antiseptic1488 [7]

Answer:

\mu=0.98\ Pa.s

Explanation:

Given:

  • dimension of square plate, l=0.2\ m
  • thickness of fluid layer, dy=0.004\ m
  • force on the fluid due to plate, F=1\ kgw=1\times 9.8=9.8\ N
  • velocity of plate, du=1\ m.s^{-1}

<u>Using Newton's law of viscosity:</u>

\tau=\mu.\frac{du}{dy} ..........................................(1)

where:

\tau= shear force on the surface on the fluid

\mu= coefficient of (dynamic) viscosity

Now, shear force:

\tau=\frac{shear\ force}{area}

\tau=\frac{9.8}{0.2\times0.2} \ Pa

Putting respective values in eq.(1)

\frac{9.8}{0.2\times0.2}=\mu\times\frac{1}{0.004}

\mu=0.98\ Pa.s

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3 years ago
The National High Magnetic Field Laboratory once held the world record for creating the strongest magnetic field. Their largest
Marina86 [1]

Answer:

a = 85.3×10⁶ m/s²

Explanation:

Please see the attachment below.

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3 years ago
El dormitorio de Pablo es rectangular, y sus lados miden 3 y 4 metros. Ha decidido dividirlo en dos partes triangulares con una
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Answer:

 c = 5 m

Explanation:

this exercise you want to divide the rectangular room into two triangular rooms

                 

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this is the length of the curtain

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Yes it would be different on Earth and the moon

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