
Transferencia de Calor y Cambio de Fase
Authored by carlos castañeda
Physics
University
10 Questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cuanto Calor se requiere para fundir 2 grs de Hielo que esta a -2°C
162 Cal
160 Cal
159,9 Cal
162 J
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
5 grs de H2O para gasificarlos cuanto calor requiere.
3200 Cal
3200 J
3199,95 Cal
2700 Cal
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cuanto calor se requiere para fundir 3 grs de Cobre.
397,32 Cal
397,32 J
397,32 Btu
301,32 Cal
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Una placa de Aluminio de 2,5 m, área 5 m2, DT 50 K, cuanto calor genera por conducción en 10 segundos?
205000 J
205000 W/s
20500 J
205000 W
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Una barra de bronce 50 cm, área 100 cm2, un extremo esta en vapor y el otro en hielo. ¿Cuánto calor genera por conducción en un minuto?.
3,12 Kcal
3,12 Kcal/s
1,56 J
1,56 Cal
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Un cuerpo casi negro de 50 m2, 100 K, ¿Cuánto calor genera por radiación?
283,5 W
283,75 W
285 W
283,548 W
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Un panel horizontal tiene un DT=283,15 K, A= 2m2, calcule el coeficiente de convección horizontal (ht)
1,61646 x10-3 Kcal / m2sc
1,05808 x10-3 Kcal / m2sc
5,5838 x10-4 Kcal / m2sc
1,61646 x10-4 Kcal / m2sc
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