Questions and Answers
What is the formula for Kinetic Energy?
What does the formula Mass (kg) X Specific Heat Capacity (J/kg'C) X Temperature Change ('C) represent?
What is the formula for Gravitational Potential Energy?
Mass (kg) X Gravitational Field Strength (N/kg) X Height (m)
What is the formula for Elastic Potential Energy?
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What is the definition of Power (W)?
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How is Energy Efficiency (%) calculated?
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Study Notes
Kinetic Energy
- Calculated using the formula: 0.5 × Mass (kg) × Velocity² (m/s).
- Represents the energy an object possesses due to its motion.
Thermal Energy
- Determined by the formula: Mass (kg) × Specific Heat Capacity (J/kg°C) × Temperature Change (°C).
- Indicates the energy associated with the temperature change of a substance.
Gravitational Potential Energy
- Formula: Mass (kg) × Gravitational Field Strength (N/kg) × Height (m).
- Describes the energy stored in an object due to its position above the ground.
Elastic Potential Energy
- Calculated using: 0.5 × Spring Constant × Extension².
- Reflects the energy stored in a stretched or compressed spring.
Power
- Defined as Energy Transferred divided by Time (s).
- Measures the rate of energy transfer or conversion.
Energy Efficiency
- Expressed as: (Useful Energy (J) / Total Energy (J)) × 100.
- Indicates the percentage of energy that is converted into useful work, highlighting losses in energy conversion processes.
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Test your understanding of key physics energy equations with these flashcards. Each card provides a definition of different energy types, including kinetic and gravitational potential energy. Perfect for students looking to reinforce their knowledge of energy concepts in physics.
