63. (a) If the Sun supplied 1 kW m-2 to the ice in the previous question and the ice had an albedo of 0.90, estimate the time it would take for the ice to melt and reach 16 °C. (b) What assumptions have been made in this estimate? 64. Define the following terms (a) energy the capacity to do work (b) energy density (c) efficiency of an energy conversion (d) albedo (e) resonance (f) emissivity (g) surface heat capacity (h) the coefficient of volume expansion. 65. Describe the meaning of the following and give an example of each (a) a thermodynamic cycle (b) energy degradation (c) a fossil fuel (d) a renewable energy source (e) a pump storage system (f) a combined cycle gas turbine (g) an oscillating column
63. (a) If the Sun supplied 1 kW m-2 to the ice in the previous question and the ice had an albedo of 0.90, estimate the time it would take for the ice to melt and reach 16 °C. (b) What assumptions have been made in this estimate? 64. Define the following terms (a) energy the capacity to do work (b) energy density (c) efficiency of an energy conversion (d) albedo (e) resonance (f) emissivity (g) surface heat capacity (h) the coefficient of volume expansion. 65. Describe the meaning of the following and give an example of each (a) a thermodynamic cycle (b) energy degradation (c) a fossil fuel (d) a renewable energy source (e) a pump storage system (f) a combined cycle gas turbine (g) an oscillating column
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