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C.P.S.M.P
QLLO-CBBA
FÍSICA
PRACTICA # 3
CALORIMETRIA
Nombre:
Profesor:
Curso:
3 medio “A”
P D
PRACTICA # 3
CALORIMETRIA
Alumno (a).............................................................................Curso 3°A Sec.
1.) En una maquinaria se tienes 3 engranajes A, B y C acopladas, el numero de dientes de cada engranaje es Na= 20 Nb=15 Nc=25 la velocidad de rotación del engranaje B es de 2 Rev/s ¿cuáles son las velocidades de rotación de los engranajes Ay C?
Un calorímetro de cobre que tiene 55 gr. (Ce= 0.093 cal/gr° C) contiene 250 gr de H2O a 18°C cuando se dejan caer dentro el calorímetro 75 gr. De una aleación a 100°C la temperatura resultante es 20.4°C ¿ cual es el Ce de la aleación?
Determinar la temperatura resultante cuando 1Kg de hielo a 0°C se mezcla con 9Kg de H2O a 50°C .
10 Lb de vapor a212 se condensan en 500 lb de H2O a 40°F ¿cuál es la temperatura resultante?
Una dieta normal debe aportar 20000000 cal. Nutricionales a una persona de 60Kg . Si esta energía se usara para calentar a una persona que no experimenta perdidas con los alrededores ¿cuánto se incrementa la temperatura a esa persona?
Ce= 0.83 cal./gr°C para la persona
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Enviado por: Brujita Idioma: castellanoPaís: Bolivia