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WorksheetsThermal Science
Total questions: 23
Worksheet time: 17mins
25 °C in kelvins
298.45 K
248.15 K
298.15 K
The First Law of Thermodynamics describes the conservation of energy
True
False
In the formula of The First Law of Thermodynamics, the ''W'' represent:
Work done on or by the system
Change in internal energy
Energy transferred as heat
No work is done on or by the system
Isothermal
Adiabatic
Isovolumetric
Isolated System
Which of the following is equivalent to the principle of energy conservation?
Newton’s first law
The first law of thermodynamics
Newton’s second law
The second law of thermodynamics
The type of system that can exchange mass and energy, usually in the form of heat with its surroundings.
isolated system
open system
closed system
A heat engine
converts heat input to an equivalent amount of work
converts work to an equivalent amount of heat
takes heat in, does work, and loses energy heat
uses positive work done on the system to transfer heat from a low temperature reservoir to a high temperature reservoir
uses positive work done on the system to transfer heat from a high temperature reservoir to a low temperature reservoir
A Carnot cycle
is bounded by two isotherms and two adiabats on a p-V graph
consists of two isothermal and two constant volume processes
is any four sided process on a p-V graph
only exists for an ideal gas
has an efficiency equal to the enclosed area on a p-V diagram
A Carnot engine operates between 200°C and 20°C. Its maximum possible efficiency is
90%
100%
38%
24%
72%
Process 1-2 is ....
adiabatic expansion
adiabatic compression
isothermal expansion
isothermal compression
The high reservoir is in 100 degree celcius, and the low reservoir is in 10 degree celcius. The efficiency of this carnot engine is ....
75,9%
24,1%
90%
10%
Entropy is a measure of
accuracy
precision
the disorder of a system
the attraction of a nucleus for an electron
What phase of matter has the most entropy?
solid
liquid
gas
