Answer to Question #207516 in Molecular Physics | Thermodynamics for sindiswa

Question

1) A 178 g copper calorimeter contains 601 g of water at 19.2°C. Steam at 100°C is bubbled through the water. After a while, the mass of water in the calorimeter has increased by 9.5 g, and the temperature is 30.3°C.

Use this information to determine an approximate value for the latent heat of vaporization of water( Mg/kg)

2)A solid cylinder of radius 2.36 cm, length 4.98 cm, emissivity 0.839, and temperature 33.9°C is suspended in an environment of temperature 50.7°C.

a. Calculate the cylinder’s net thermal radiation transfer rate( P_{net 1)}

b. If the cylinder is stretched until its radius is 0.426 cm, its net thermal radiation transfer rate becomes P_{net 2}. Determine the ratio P_{net 2}/P_net

 

 

 

Answer 1

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