Why is energy conservation important?
Conserving energy is crucial for sustaining natural resources, reducing environmental impact, and maintaining ecological balance.
What are renewable energy sources?
Renewable energy sources are those that can be replenished naturally over short timescales and include solar, wind, hydro, and geothermal energy.
How is energy related to mass?
The relationship between energy and mass is famously explained by Einstein’s theory of relativity, specifically through the equation: E = mc² Where: E is the energy, m is the mass of the object, c is the speed of light in a vacuum (approx 3 × 10⁸ m/s).
Can energy exist in forms other than kinetic and potential?
While kinetic and potential are the primary categories, energy can manifest in various specific forms like nuclear, magnetic, or ionization energy, each associated with particular physical phenomena.
What is the difference between energy and power?
Energy is the capacity to do work, while power is the rate at which work is done or energy is transferred.
How does energy transfer occur?
Energy transfer occurs when work is done on an object, transferring energy from one form to another (e.g., from potential to kinetic energy).
What is mechanical energy?
Mechanical energy is the sum of an object's kinetic and potential energy.
Can energy be destroyed?
No, according to the law of conservation of energy, energy cannot be created nor destroyed; it can only be converted from one form to another.
What is the difference between kinetic and potential energy?
Kinetic energy is the energy an object has due to its motion, while potential energy is the stored energy due to an object’s position or configuration.
What is the SI unit of energy?
The SI unit of energy is the $\boldsymbol{Joule (J)}$.
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