Firefighter Mechanical Aptitude · Question
According to the principle of conservation of energy, what happens to the total energy within an isolated system?
The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another within an isolated system.
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Question: According to the principle of conservation of energy, what happens to the total energy within an isolated system?
Answer options:
- It increases over time.
- It decreases over time. ✅ It remains constant.
- It transforms entirely into mass.
Correct answer: It remains constant.
Explanation: The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another within an isolated system.
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Question explanations
- Scenario 1: Which simple machine uses a fulcrum to multiply force or change the direction of force?
- Scenario 2: If a hydraulic jack has a small piston with an area of 5 cm² and a large piston with an area of 50
- Scenario 3: Which of the following would require the MOST force to move?
- Scenario 4: A rope is tied to a heavy box. Instead of pulling the box directly, a firefighter wraps the rope a
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