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vodomira [7]
3 years ago
8

A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in

a time T. The heat of fusion of this metal is
Physics
1 answer:
vovangra [49]3 years ago
4 0

Answer:

L = Pt/M

Explanation:

Power, P= Q/t = mL/t

​

we know that, (Q=m×l)

Now ⇒l= Pt/M

​

Thus l= Pt/M

​

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A phonograph record accelerates from rest to 28.0 rpm in 5.73 s.
Arturiano [62]

Answer:

a) \alpha=0.5117\ rad.s^{-2}

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b)

Using eq. of motion:

\theta=\omega_i.t+\frac{1}{2} \alpha.t^2

\theta=0+\frac{1}{2}\times 0.5117\times 5.73^2

\theta=8.4\ rad

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