Help please on all Problem 4A spring-loaded piston-cylinder device is initially filled with 0.13 lbm of an R-134a liquid-vapor mixturewhose temperature is -30°F and whose quality is 80 percent. The spring constant in the spring forcerelation F = kx is 37 lbf/in, and the piston diameter is 12 in. The R-134a undergoes a process that increasesits volume by 50 percent. Calculate the final temperature and enthalpy of the R-134a.Problem 5Water is to be boiled at sea level in a 30-cm-diameter stainless steel pan placed on top of a 3-kW electricburner. If 60 percent of the heat generated by the burner is transferred to the water during boiling, determinethe rate of evaporation of water.Problem 6Water is boiled in a pan covered with a poorly fitting lid at a specified location. Heat is supplied to the pan bya 2-kW resistance heater. The amount of water in the pan is observed to decrease by 1.19 kg in 30 minutes.If it is estimated that 75 percent of electricity consumed by the heater is transferred to the water as heat,determine the local atmospheric pressure in that location.

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A spring-loaded piston-cylinder device is initially filled with 0.13 lbm of an R-134a liquid-vapor mixture whose temperature is -30°F and whose quality is 80 percent. The spring constant in the spring force relation F = kx is 37 lbf/in, and the piston diameter is 12 in. The R-134a undergoes a process that increases its volume by 50 percent. Calculate the final temperature and enthalpy of the R-134a.

A spring-loaded piston-cylinder device is initially filled with 0.13 lbm of an R-134a liquid-vapor mixture whose temperature is -30°F and whose quality is 80 percent. The spring constant in the spring force relation F = kx is 37 lbf/in, and the piston diameter is 12 in. The R-134a undergoes a process that increases its volume by 50 percent. Calculate the final temperature and enthalpy of the R-134a.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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