Chemical Energy, Thermal Energy, Electrical, Sound Energy, Light Energy, Magnetic Energy, Elastic Potential, Kinetic Energy, Gravitational Potential, Nuclear.
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How can energy be transferred?
Energy can be transferred by heating, by forces doing work or by electrical equipment.
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What is Work Done?
Work Done is when a force moves an object.
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What happens when a force moves an object?
When a force moves an object through a distance, WORK IS DONE and energy is transferred.
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How do you calculate Work Done?
Work Done (J) = Force (N) x Distance (M)
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What is Work Done measured in?
Work Done is measured in Joules (J)
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What is Force measured in?
Force is measured in Newtons (N)
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What is Distance measured in?
Distance is measured in Metres (M)
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Energy Transferred is also known as?
Work Done is also known as Energy Transferred.
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What happens to a force when it is doing work?
A force doing work often causes a rise in temperature as energy is dissipated (Wasted) to the thermal energy of the moving obejct and the surroundings.
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What is Energy Efficiency?
Energy Efficiency is a measure of how much work or energy is conserved in a process.
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How do you calculate Energy Efficiency?
Efficiency = Useful energy transferred by device / Total energy supplied to device.
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What is Power?
Power is the rate of energy transfer and how much work is done per second.
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How do you calculate Power?
Power (W) = Work Done (J) / Time taken (s)
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What is Power measured in?
Power is measured in Watts (W)
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What is time measured in?
Time is measured in Seconds (s)
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What is Work Done measured in?
Work Done is measured in Joules (J)
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What is a Force?
A force is a push or pull on an object that is caused by it interacting with something.
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What causes forces to happen?
Interactions between objects cause forces.
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What does the interacting of magnetic fields cause?
The interacting of magnetic fields causes attraction or repulsion between magnetic objects.
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What causes attraction and repulsion between electrical charges in an electrostatic force.
It is due to the interaction between the electrical fields.
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What does a free body force diagram show?
A free body force diagram shows an object or a system and all of the forces acting on it.
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What is the resultant force?
A resultant force is the overall force on a point or an object.
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What is a Moment?
A moment is the turning effect of a force.
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How to calculate the Moment?
Moment (Nm) = Force (N) x Distance (M)
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What is Moment measured in?
Moment is measured in Newton meters (Nm).
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What is important about calculating Moments?
The distance must be perpendicular from the line of action of the force to the pivot.
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How do you calculate the change in Gravitational Potential?
Change in Gravitaional Potential = Mass (Kg) x Height x Acceleration due to gravity.
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How do you calculate Kinetic Energy?
Kinetic Energy = 1/2 x Mass x (Velocity) Squared.
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Other cards in this set
Card 2
Front
How can energy be transferred?
Back
Energy can be transferred by heating, by forces doing work or by electrical equipment.
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