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PE Integrated Concepts How much time is needed for a
Chapter 15, Problem 62PE(choose chapter or problem)
PE Integrated Concepts How much time is needed for a surgical cauterizer to raise the temperature of 1.00 g of tissue from 37.0ºC to 100ºC and then boil away 0.500 g of water, if it puts out 2.00 mA at 15.0 kV? Ignore heat transfer to the surroundings.
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QUESTION:
PE Integrated Concepts How much time is needed for a surgical cauterizer to raise the temperature of 1.00 g of tissue from 37.0ºC to 100ºC and then boil away 0.500 g of water, if it puts out 2.00 mA at 15.0 kV? Ignore heat transfer to the surroundings.
ANSWER:Step-by-step solution Given: Mass of the tissue=1.00 g Initial tempreature = 37.0ºC final tempreature=100ºC Mass of the water=0.500 g Current = 2.00 mA Voltage= 15.0 kV Calculate : time need to raise the tempreature = Step 1 of 4 we know that power is given by equation (1) , below, The rate at which energy is produced through a current carrying element is, P= IV……………………….(1) Here, I is the current and V is the voltage supplied. And the energy produced is product of power and time duration (t) of production of heat.and given by equation (2) as below E= P.t……………………(2) But from equation(1) we can write, E= IVt……………………(3)