8) Which of these does not describe electromagnetic energy a) Electromagnetic energy is sometimes manifest as visible light b) The earth receives electromagnetic energy from the sun c) Gamma rays and radio waves are forms of electromagnetic energy d) Electromagnetic energy is produced by anything that with mass e) Electromagnetic travels in the form of waves 9) Which of these statements about the efficiency of a heat engine is not true a) The efficiency depends on the temperature differences between the heat source and heat sink b) The efficiency depends on the ratio of the temperature between the heat source and heat sink c) The best efficiency possible describe by Nicholas Carnot's efficiency equation d) A 0 kelvin heat sink would make a 100% efficient engine e) The efficiency of an engine can be increased by increasing the temperature of the engine and higher degrees

8) Which of these does not describe electromagnetic energy a) Electromagnetic energy is sometimes manifest as visible light b) The earth receives electromagnetic energy from the sun c) Gamma rays and radio waves are forms of electromagnetic energy d) Electromagnetic energy is produced by anything that with mass e) Electromagnetic travels in the form of waves 9) Which of these statements about the efficiency of a heat engine is not true a) The efficiency depends on the temperature differences between the heat source and heat sink b) The efficiency depends on the ratio of the temperature between the heat source and heat sink c) The best efficiency possible describe by Nicholas Carnot's efficiency equation d) A 0 kelvin heat sink would make a 100% efficient engine e) The efficiency of an engine can be increased by increasing the temperature of the engine and higher degrees