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denpristay [2]
3 years ago
14

De que color son las mangas del chaleco de bonaparte

Physics
1 answer:
beks73 [17]3 years ago
7 0
Chalecos no tienen  mangas. Vests don't have sleeves.<span />
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Children are ready for more complex storybooks:
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A machine part has the shape of a solid uniform sphere of mass 250 g and a diameter of 4.30 cm. It is spinning about a frictionl
zysi [14]

Answer:\alpha =9.302\ rad/s^2

Explanation:

Given

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radius r=\frac{4.30}{2}\ cm

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friction will provide resisting torque so

f\times r=I\times \alpha

where I=\text{moment of Inertia}

f=\text{friction force}

\alpha =\text{angular acceleration}

I=\frac{2}{5}mr^2

0.02\times r=\frac{2}{5}mr^2\times \alpha

\alpha =\frac{5}{2r}\times f

\alpha =\frac{5}{2}\times \frac{2}{4.3\times 10^{-2}}\times 0.02

\alpha =9.302\ rad/s^2

(b)time taken to decrease its rotational speed by 21\ rad/s

t=\dfrac{\Delta \omega }{\alpha }

t=\dfrac{21}{9.302}

t=2.25\ s

6 0
3 years ago
What is the difference between heat capacity and specific heat capacity? I want the meaning please.
charle [14.2K]

Answer:

<em>The </em><em>heat </em><em>capacity</em><em> </em><em>of </em><em>a </em><em>body </em><em>is </em><em>defined</em><em> </em><em>as </em><em>the </em><em>heat </em><em>required</em><em> </em><em>to </em><em>raise </em><em>it's </em><em>temperature</em><em> </em><em>by </em><em>me </em><em>degree </em><em>or </em><em>one </em><em>kelvin.</em><em>w</em><em>h</em><em>i</em><em>l</em><em>e</em><em> </em><em>specific</em><em> </em><em>heat </em><em>capacity </em><em>of </em><em>a </em><em>substance</em><em> </em><em>is </em><em>defined</em><em> </em><em>as </em><em>the </em><em>heat </em><em>required</em><em> to</em><em> </em><em>the </em><em>temperature</em><em> </em><em>of </em><em>a </em><em>unit </em><em>mass </em><em>of </em><em>it </em><em>through </em><em>one </em><em>degree </em><em>or </em><em>one </em><em>kelvin</em><em>.</em>

<em>I </em><em>hope </em><em>it </em><em>helps</em>

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