Objective: At the end of the activity, you should be able to describe the stages of heat
engine which demonstrate change of thermal energy into mechanical work.
Directions: Analyze the repetitive mechanism of heat engine, four-stroke diesel engine,
to run a car. Do tasks 3.1 and 3.2. Write your answers on your answer sheet.
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Answer:
Objective: At the end of the activity, you should be able to calculate the change in
internal energy of a system when heat is added into it.
Directions: Study the sample problems below. After analyzing the word problems,
answer the problem tasks. Write your answers on your answer sheet.