標題:
問PHY 2004 CE MC Q.18 AND Q.19
發問:
問PHY 2004 CE MC Q.18 AND Q.19 可唔可以解釋下個答案點黎?
Q18) A: Incorrect since the first flattened part of curve P is higher than that of Q B: Correct since the slope of curve P in solid state is smaller than that of Q, implying that P needs more energy to rise for a certain temperature than same mass of Q C: Incorrect since the duration of the first flattened part of curve P is shorter than that of Q. D: Incorrect since from the graph, we can see that P starts to boil earlier than Q. Q19) Supposing there's no heat loss to the surroundings: Energy = 0.1 × 3.6 × 106 J = 360000 J Mass of liquid vapourized = 0.15 kg So specific latent heat = 2.4 × 106 J/kg So ans = C
其他解答:
問PHY 2004 CE MC Q.18 AND Q.19
發問:
問PHY 2004 CE MC Q.18 AND Q.19 可唔可以解釋下個答案點黎?
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最佳解答:Q18) A: Incorrect since the first flattened part of curve P is higher than that of Q B: Correct since the slope of curve P in solid state is smaller than that of Q, implying that P needs more energy to rise for a certain temperature than same mass of Q C: Incorrect since the duration of the first flattened part of curve P is shorter than that of Q. D: Incorrect since from the graph, we can see that P starts to boil earlier than Q. Q19) Supposing there's no heat loss to the surroundings: Energy = 0.1 × 3.6 × 106 J = 360000 J Mass of liquid vapourized = 0.15 kg So specific latent heat = 2.4 × 106 J/kg So ans = C
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