3 years ago

How much work is done on an object if 10 newtons of force are applied to the object and it moves 2 meters?

Physics

1 answer:

iren [92.7K]3 years ago

6 0

Answer is D..by applying formula W=Fs ..10×2 = 20

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3 years ago

By how much does the volume of an aluminum cube 4.00 cm on an edge increase when the cube is heated from 19.0°C to 67.0°C? The l

Genrish500 [490]

Answer:

The volume of an aluminum cube is 0.212 cm³.

Explanation:

Given that,

Edge of cube = 4.00 cm

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linear expansion coefficient $\alpha=23.0\times10^{-6}/C^{\circ}$

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$\beta=3\alpha$

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$V=4^3$

$V=64\ cm^3$

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$\Delta T=T_{f}-T_{i}$

Put the value into the formula

$\Delta T=67-19 = 48^{\circ}C$

We need to calculate the increases volume

Using formula of increases volume

$\Delta V=V\beta\Delta T$

Put the value into the formula

$\Delta V=64\times69\times10^{-6}\times48$

$\Delta V=0.212\ cm^3$

Hence, The volume of an aluminum cube is 0.212 cm³.

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