heat transfer

A cold solid sphere of radius $5 cm$ and conductivity $20 w / mic$ heated iniformally at a rate of $20000 w / m^{3}$ and convection heat transfor take place into the ambient air at $2 5^{?} C$ . The heat transfer coefficient is $20 w / m^{2}^{?} C$ . Determine the temperature at the centre and the outer surface of the sphere at steady state conditions.

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heat transfer

A cold solid sphere of radius

5 cm

and conductivity

20 w / mic

heated iniformally at a rate of

20000 w / m^{3}

and convection heat transfor take place into the ambient air at

2 5^{?} C

. The heat transfer coefficient is

20 w / m^{2}^{?} C

. Determine the temperature at the centre and the outer surface of the sphere at steady state conditions.

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