Physics

• Energy is the ability to do work.
• Potential energy is the stored energy that can be used to perform work.
• Kinetic energy is the energy of motion.
• In the diagram, the child on a swing displays both potential and kinetic energy in action.
• Potential energy is at its highest level when the child has reached the top of the swinging motion (A).
• Kinetic energy increases as the child begins to swing back towards the center of the swing set.
• Kinetic energy is at its highest level at the bottom of this curve, while potential energy is at its lowest value there (B).
• Energy transformation is the process of changing from one form of energy to another.
• Energy is the ability to do work or cause change.
• There are many different forms of energy, and they can be converted from one form to another.
• Potential Energy is the energy of position or shape of a body.
• Chemical Energy is the energy of chemical reactions between atoms or molecules.
• Gravitational Energy is the energy of attraction between objects based on their mass.
• Kinetic Energy is the energy of motion of a body.
• Mechanical Energy is the sum of potential energy and kinetic energy in motion.
• Perpetual motion machines are impossible, according to the second law of thermodynamics.
• In simpler terms, entropy is a measure of chaos or the spreading out of energy.
• Radiant Energy is the energy of light or electromagnetic waves.
• Thermal energy is transferred from an object of higher temperature and cannot be transferred from an object with lower temperature to an object with higher temperature.
• Entropy is a concept in thermodynamics and statistical mechanics that represents the degree of disorder or randomness in a system.
• The first law of thermodynamics states that the change in internal energy of a system is equal to the net heat transfer into the system plus the net work done on the system.
• Heat is a form of energy that can be transferred from one object to another, while work is the energy required to move an object.
• Any object in motion uses kinetic energy.
• The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted from one form to another.
• The second law of thermodynamics states that heat naturally flows from hot to cold and entropy increases.
• Thermodynamics is a branch of physics that deals with the relationship between heat and other forms of energy.
• The less order in a system, the greater its entropy is.
• The total amount of energy in a closed system remains constant over time, according to the law of conservation of energy.
• Entropy is a measure of the system's unavailable energy for doing work.
• Thermal Energy is the vibrations of atoms and molecules within materials.
• Sound Energy is the energy produced by vibrating sound waves moving through a medium.
• Nuclear Energy is the energy of changes in the nuclei of atoms.
• Electrical Energy is the energy produced by the movement of electrons.
• Conservation of Energy states that energy cannot be created or destroyed, it can only be transformed from one form to another.
• Mechanical Energy (ME = KE + PE) is energy related to motion and location.
• Potential energy is stored in the material.
• Kinetic energy is motion.
• Work done = force x distance moved in direction of force
• Energy can be transferred from one object to another by work done or heat transfer.
• The SI unit of energy is the joule (J).