Answer to Question #51929 in Field Theory for vi

Question

The specific heat of a substance at its boiling point or melting point
0
infinity
negative
between 0 and 1
10 Mass of gas is 300 gm and its specific heat at constant volume is 750 J/kg K. if gas is heated through 75°C at constant pressure of 105 N/{m^2}, it expands by volume
0.08×106cm3
. find
CP/CV
.
1.4
1.374
1.474
1.5
11 A solid ball with a mass m = 0.53 kg floats in a tank of water. The ball is made of material with a density of 400
kg/m3
. The density of water is 1000
kg/m3
. What fraction of the volume of the ball is below the waterline?
0.1
0.2
0.3
0.4
12 A slab of wood with mass m = 1.7 kg floats 78% submerged.The density of water is 1000
kg/m3
. What is the density of the wood?
720
kg/m3
780
kg/m3
850
kg/m3
900
kg/m3