1. A rectangular steel plate with dimensions of 30 cm x 25 cm is heated from...
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1. A rectangular steel plate with dimensions of 30 cm x 25 cm is heated from 20°C to 220°C. What is its change in area? (Coefficient of linear expansion for steel is 11 x 10/C.) a. 0.82 cm? b. 1.65 cm? c. 3.3 cm? d. 6.6 cm? 2. A system is acted on by its surroundings in such a way that it receives 50 J of heat while simultancously doing 20 J of work. What is its net change in internal energy? a. 70J b. 30J C. zero d. -30 J e -70J 3. A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment. What is its change in internal energy? a. -20J b. -5J C. +5J d. +20J e. Zero B .1 .3 .4 Volume, m A reversible heat engine has the PV graph shown. The work done during the entire cycle is a. zero b. 2.5 kJ c. 6.0 kJ d. 2.0 kJ e. 5.0 kJ Pressure, Pa x 104 2. 1. A rectangular steel plate with dimensions of 30 cm x 25 cm is heated from 20°C to 220°C. What is its change in area? (Coefficient of linear expansion for steel is 11 x 10/C.) a. 0.82 cm? b. 1.65 cm? c. 3.3 cm? d. 6.6 cm? 2. A system is acted on by its surroundings in such a way that it receives 50 J of heat while simultancously doing 20 J of work. What is its net change in internal energy? a. 70J b. 30J C. zero d. -30 J e -70J 3. A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment. What is its change in internal energy? a. -20J b. -5J C. +5J d. +20J e. Zero B .1 .3 .4 Volume, m A reversible heat engine has the PV graph shown. The work done during the entire cycle is a. zero b. 2.5 kJ c. 6.0 kJ d. 2.0 kJ e. 5.0 kJ Pressure, Pa x 104 2.
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To find the change in area of the steel plate when heated we can use the formula A 2 A T Where A Cha... View the full answer
Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
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