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GarryVolchara [31]
3 years ago
6

I need help pls now ​plleeeeeeeeaaassseeeee

Physics
1 answer:
GrogVix [38]3 years ago
4 0

Answer:

r =  \frac{v}{i}  = v = ri \\  i =  \frac{v}{r}

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A thin, rectangular sheet of metal has mass M and sides of length a and b. Find the moment of inertia of this sheet about an axi
Lubov Fominskaja [6]

Answer:

The moment of inertia is I=\frac{M}{12} a^{2}

Explanation:

The moment of inertia is equal:

I=\int\limits^a_b {r^{2} } \, dm

If r is -\frac{a}{2}

and dm=\frac{M}{a} dr

I=\int\limits^a_b {r^{2}\frac{M}{a}  } \, dr\\a=\frac{a}{2} \\b=-\frac{a}{2}

I=\frac{M}{a} \int\limits^a_b {r^{2}  } \, dr\\\\I=\frac{M}{a} (\frac{M}{3} )_{b}^{a}\\  I=\frac{M}{3a} (\frac{a^{3} }{8} +\frac{a^{3} }{8} )\\I=\frac{M}{12} a^{2}

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bagirrra123 [75]

what happens at Point C is sublimation. the increase in temperature affects the Vapour pressure soon as you can see the curve is increasing with increasing pressure there is increase in temperature that is the sublimation Curve

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5. What is the name of the Scientist who began classification?
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andrey2020 [161]

The amount of energy needed to melt the ice is 1670 J

Explanation:

The amount of thermal energy needed to completely melt a certain amount of solid substance (already at melting point) is given by

Q=m\lambda_f

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m is the amount of the substance

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Here, the mass of the ice is

m = 5 g = 0.005 kg

And the specific latent heat of fusion of ice is

\lambda_f = 334,000 J/kg

Assuming that the ice is already at melting point, the thermal energy needed to melt the ice is

Q=(0.005)(334,000)=1670 J

Learn more about specific heat:

brainly.com/question/3032746

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#LearnwithBrainly

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