3 years ago

Umnotho usemhlabathini amaphuzu

Physics

1 answer:

nevsk [136]3 years ago

6 0

Answer:

what :D

Explanation:

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A wire of length 5mm and Diameter 2m extends by 0.25 when a force of 50N was use. calculate the

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Answer and Explanation:

Data provided in the question

Force = 50N

Length = 5mm

diameter = 2.0m = $2\times 10^{-3}$

Extended by = 0.25mm = $0.25\times 10^{-3}$

Based on the above information, the calculation is as follows

a. The Stress of the wire is

$= \frac{force\ applied}{area\ of \ circle}$

here area of circle = perpendicular to the are i.e cross-sectional i.e

= $\frac{\pi d^{2}}{4}$

= $\frac{\pi(2\times 10^{-3})^2}{4}$

Now place these above values to the above formula

$= \frac{4\times 50}{\pi\times 4 \times 10^{-6}} \\\\ = \frac{50}{\pi}$

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MPa = 10^6 N m^2

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3 years ago

a sound has a frequency of 230 hz. what is the velocity of this sound if it has a wavelength of 46 cm?

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Answer:

V=f×λ

Where,

V is the velocity of the wave measure using m/s.

f is the frequency of the wave measured using Hz.

λ is the wavelength of the wave measured using m.

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Umnotho usemhlabathini amaphuzu​

Umnotho usemhlabathini amaphuzu