3. Water, specific heat capacity c = 4.186 joules/gram C, flows through an insulated plastic pipe at a flow rate of 16.0 grams/sec. The water enters the pipe at a temperature of 10 C and leaves at a temperature of 80 C. The water is heated by an electric heater in the middle of the pipe. What is the Power output of the electric heater? 4. The resistance of a resistor changes with temperature; the equation is given as: R=a T^2 + bT + C. The resistance was measured at three different temperatures. (20 C, 521 ohms), (60 C, 1329 ohms) , (100 C, 2925 ohms). What are the values of a, b, and c for this resistor? (hint: create three equations, solve for the unknowns aband c using simultaneous equations.

3. Water, specific heat capacity c = 4.186 joules/gram C, flows through an insulated plastic pipe at a flow rate of 16.0 grams/sec. The water enters the pipe at a temperature of 10 C and leaves at a temperature of 80 C. The water is heated by an electric heater in the middle of the pipe. What is the Power output of the electric heater? 4. The resistance of a resistor changes with temperature; the equation is given as: R=a T^2 + bT + C. The resistance was measured at three different temperatures. (20 C, 521 ohms), (60 C, 1329 ohms) , (100 C, 2925 ohms). What are the values of a, b, and c for this resistor? (hint: create three equations, solve for the unknowns aband c using simultaneous equations.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 14CQ: The current I is measured through a sample of an ohmic material as a voltage V is applied, (a) What...

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