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Physics Energy Equations Flashcards

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Questions and Answers

What is the formula for Kinetic Energy?

Mass (kg) X Specific Heat Capacity (J/kg'C) X Temperature Change ('C)

Mass (kg) X Gravitational Field Strength (N/kg) X Height (m)

0.5 X Mass (kg) X Velocity^2 (m/s) (correct)

0.5 X Spring Constant X Extension^2

What does the formula Mass (kg) X Specific Heat Capacity (J/kg'C) X Temperature Change ('C) represent?

Power

Gravitational Potential Energy

Thermal Energy (correct)

Kinetic Energy

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?

0.5 X Spring Constant X Extension^2 Signup and view all the answers

What is the definition of Power (W)?

Energy transferred / time (s) Signup and view all the answers

How is Energy Efficiency (%) calculated?

Useful energy (J) / Total Energy (J) X 100 Signup and view all the answers

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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Description

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.