Physics

• The SI unit of energy is the joule (J).
• Newton's third law of motion states that for every action, there is an equal and opposite reaction.
• Work done = force x distance moved in same direction
• Convection - Hot air rises and cold air falls due to differences in density.
• Radiation - Energy travels through space without any medium.
• Convection - Hot air rises and cold air falls due to differences in density.
• Newton's third law of motion states that for every action, there is an equal and opposite reaction.
• Energy can be transferred between objects by work done, heating or cooling, and electric current.
• Energy can be transferred as heat or work.
• A force can be calculated using F = ma, where m is mass and a is acceleration.
• 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.
• Power = work done / time taken
• Newton's first law of motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
• Newton's second law of motion describes how the velocity of an object changes when it is subjected to an external force.
• Energy is transferred when work is done or heat is produced.
• Heat transfer occurs when there is a temperature difference between two objects, with hotter objects losing heat and cooler ones gaining it.
• Work done by a constant force moving through a distance can be found using W = Fd, where d is displacement.
• Kinetic energy is the energy possessed by moving objects due to their motion.
• Energy can be transferred from one form to another but cannot be created or destroyed.
• Thermal conductivity - The ability of materials to transfer heat by conduction.
• Work done = force x distance moved in direction of force
• Thermal conductivity - The ability of a material to transfer heat by conduction.
• Power = work done / time taken
• Thermal conductivity - The ability of materials to transfer heat by conduction.
• Kinetic energy is the energy possessed by moving objects due to their motion.
• Heat transfer occurs when there is a temperature difference between two objects, with hotter objects losing heat and cooler ones gaining it.
• Specific latent heat - The amount of energy required to change the state of one kilogram of substance without changing its temperature.
• The energy transfer equation is E = mcΔT, where c is the specific heat capacity (J/kg°C).
• Specific latent heat - The amount of energy required to change the state of one kilogram of substance without changing its temperature.
• The equation for work done is W=Fdcosθ where F is the magnitude of the force applied, d is the displacement, and θ is the angle between them.
• Energy transferred as work or kinetic energy = mass x acceleration squared x height
• Power (P) = energy transfer rate / time taken
• The equation for energy transfer due to work done is E = Fd cosθ, where d is the displacement and θ is the angle between the forces involved.
• The equation for power is P = E/t
• The equation for power is P = W/t
• Specific latent heat - The amount of energy required to change the state of one kilogram of a substance at constant temperature.
• The equation for power is P = E/t
• Specific latent heat - The amount of energy required to change the state of one kilogram of a substance at constant temperature.
• Specific latent heat - The amount of energy required to change the state of one kilogram of substance from liquid to gas or vice versa at constant temperature.