Lava at TH= 1050° C emerges from a volcano. A mass m = 65 kg of this lava flows at a constant ve ng Q = 12250 J of heat every second to the surroundings. The lava flows a distance of 250 m before reaching the temperature of the surroundings, T.. = 23° C is unaffected by the cooling of the lava.
Lava at TH= 1050° C emerges from a volcano. A mass m = 65 kg of this lava flows at a constant ve ng Q = 12250 J of heat every second to the surroundings. The lava flows a distance of 250 m before reaching the temperature of the surroundings, T.. = 23° C is unaffected by the cooling of the lava.
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Transcribed Image Text:Part (d) Calculate entropy change of the surroundings AS urr in J/ K while the lava was moving toward the ocean.
Part (e) Calculate the change in the entropy of the lava AS in joules per kelvin while the lava was moving toward the ocean.
Transcribed Image Text:Lava at Ty= 1050° C emerges from a volcano. A mass m = 65 kg of this lava flows at a constant velocity of v =
0.35 m/s losing Q = 12250 J of heat every second to the surroundings. The lava flows a distance of 250 m before reaching the ocean.
Assume that the temperature of the surroundings, Tsurr = 23° C is unaffected by the cooling of the lava.
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