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1. The surface of the the Sun has a temperature of about 5800K. The radius of...

1. The surface of the the Sun has a temperature of about 5800K. The radius of the Sun is 6.96 x 10^8 m. Calculate the total energy radiated by the Sun each second. Assume that the emissivity of the SUn is 0.986

2. Equal masses of substance A at 90.1C and substance B at 14.2C are palced in a well-insulated container of negligible mass and allowed to come to equilibrium. If the equilibrium temperature is 78.4C, which substance has the larger specific heat?

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