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3 years ago

When something hits a table, why are different sounds produced?

Physics

1 answer:

Mandarinka [93]3 years ago

3 0

Answer:

depends on the object, but the sound waves come from the impact of the object hitting the table and the tables thiness

Explanation:

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A 0.600-mm diameter wire stretches 0.500% of its length when it is stretched with a tension of 20.0 N. What is the Young's modul

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Answer:

(B) 1.41 x 10^{10} N/m^{2}

Explanation:

diameter of wire (d) = 0.6 mm = 0.0006 m

radius of wire (r) = 0.0006/2 = 0.0003 m

tension (force F) = 20 N

percentage strain = 0.5 %

what is the Young's modulus?

Young's modulus = $\frac{stress}{strain}$

where

stress = force/area

stress = $\frac{force}{πr^{2}}$

stress = $\frac{20}{πx0.0003^{2}}$

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strain = percentage strain ÷ 100

strain = 0.5 ÷ 100 = 0.005

therefore Young's modulus = $\frac{stress}{strain}$ = $\frac{70735530.3}{0.005}$ = 1.41 x 10^{10} N/m^{2}

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this is a physical change
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