AP Physics 2/ Unit 9 – Thermodynamics

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You’ll study heat, temperature, and thermal energy in contexts such as heat engines, heat pumps, and refrigerators.

Question Difficulty:

Question	Difficulty	Students Solved
The Concept of Entropy	medium	6
Ideal Gas Isothermal Compression	easy	5
Average Kinetic Energy and Temperature	easy	6
Internal Energy of an Ideal Gas	easy	4
Entropy and Thermal Equilibrium	easy	5
Heat Engines and the Second Law of Thermodynamics	easy	4
Rate of Heat Conduction in a Rod	medium	2
Temperature-Dependent Thermal Conductivity	hard	2
Entropy as a State Function	easy	3
Ideal Gas Constant in Internal Energy Equation	easy	4
Entropy Change in Thermodynamic Processes	medium	4
Entropy Change at Thermal Equilibrium	easy	4
Atomic Structure and Thermal Conductivity	medium	2
Internal Energy in an Isolated System	easy	3
Impurities and Thermal Conductivity in Metals	medium	3
Entropy and Irreversible Processes	medium	3
Atomic Motion in Solids and Gases	easy	2
Steady State Heat Conduction	easy	3
First Law of Thermodynamics	easy	4
Work Done in a Thermodynamic Cycle	easy	4

Items per page:

1 – 20 of 563

Rank	User	Correct Count	Attempt Count	Total Time	Score
#1	arob8150	49	65	21m 27s	3,453
#2	saman_782013	18	24	0m 00s	1,740
#3	saxstreak	14	20	0m 00s	1,340
#4	deyarfaraj0	72	121	1h 31m	1,247
#5	jovana.lj.efremova	13	20	0m 00s	1,230
#6	eddiegao521	54	90	1h 06m	1,036
#7	sgarv2513	9	14	0m 00s	850
#8	faridaefb	6	10	0m 00s	560
#9	zheenmaaroof	5	7	1m 43s	377
#10	taeholee09	3	3	0m 00s	300

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