2 years ago

This is physics class, plzzz help ! 86.72 m to cm

Physics

1 answer:

Vaselesa [24]2 years ago

5 0

Answer:

8672

Explanation:

multiply the length value by 100

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3 years ago

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A student walks the hallway for 25 m stops to talk and continues down the hallway another 10 m what is the distance and displace

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Answer:

Distance = displacement = 35m

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The distance of the student is how far he has gone.

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3 years ago

The height of the Washington Monument is measured to be 170 m on a day when its temperature is 35.0°C. What will the change in i

Alecsey [184]

Answer:

The deformation is 0.088289 m

The final height of the monument is 170-0.088289 = 169.911702 m

Explanation:

Thermal coefficient of marble varies between (5.5 - 14.1) ×10⁻⁶/K = α

So, let us take the average value

(5.5+14.1)/2 = 9.8×10⁻⁶ /K

Change in temperature = 35-(-18) = 53 K = ΔT

Original length = 170 m = L

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$\frac{\Delta L}{L} = \alpha\Delta T\\\Rightarrow \Delta L=\frac{\alpha\Delta T}{L}\\\Rightarrow \Delta L=9.8\times 10^{-6}\times 53\times 170$

The deformation is 0.088289 m

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2 years ago