43. A solid melt at 100°C by absorbing 2450 kJ heat. How much is the entropy change in this melting process? (A) 8.23 kJ/K (B) 4.32 kJ/K (C) 7.43 kJ/K (D) 6.57 kJ/K (E) 5.69 kJ/K

43. A solid melt at 100°C by absorbing 2450 kJ heat. How much is the entropy change in this melting process?
(A) 8.23 kJ/K
(B) 4.32 kJ/K
(C) 7.43 kJ/K
(D) 6.57 kJ/K
(E) 5.69 kJ/K

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統計： A(1), B(0), C(6), D(39), E(0) #2751658

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艾爾

B1 · 2021/11/30

#5239385

(共 1 字，隱藏中）

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39. On a bridge, a man (weight = 70 kg) plays bungee jumping by tying himself to one end of an elastic rope. The rope has a length of 100 m, and the height of the bridge is 500 m. After jumping, the man begins to bounce back 10 seconds later. What is the effective weight of the man at the bouncing point? (Gravitational acceleration g = 10 m/s2 ) (A) 83 kg (B) 95 kg (C) 102 kg (D) 117 kg (E) 127 kg

43. A solid melt at 100°C by absorbing 2450 kJ heat. How much is the entropy change in this melting process? (A) 8.23 kJ/K (B) 4.32 kJ/K (C) 7.43 kJ/K (D) 6.57 kJ/K (E) 5.69 kJ/K

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43. A solid melt at 100°C by absorbing 2450 kJ heat. How much is the entropy change in this melting process?
(A) 8.23 kJ/K
(B) 4.32 kJ/K
(C) 7.43 kJ/K
(D) 6.57 kJ/K
(E) 5.69 kJ/K