PHY101: The Ultimate Physics Masterclass – From
Forces to Fission
Weight equation - Mass x g
Moments equation - Force x perpendicular distance
Resultant force definition - The single force that has the same effect as all of the forces acting on
an object.
Hooke's Law - The elastic limit is the limit of proportionality.
Moments - Way to increase the moment is by increasing the distance or by increasing that
force
Experiment for Hooke's Law - Suspending spring and add weights
Efficiency equation - Useful energy out/total energy in
Conservation of energy - Energy can't be created or destroyed
Conduction - Heat energy passes from atom to atom but the material doesn't move.
Convection - Gas expands when heated, the volume increases so the density
decreases.
Radiation - Direct transfer of heat energy.
Insulation - Air is an insulator, trapped air is a really good insulator because convection can't
happen.
Pros and cons of wind power - Pros:
Renewable
Cons:
Not always windy
Noisy.
Pros and cons of wave power - Pros:
Renewable
, Cons:
Have to cover large areas of the sea.
Pros and cons of solar power - Pros:
Renewable
Cons:
Not always sunny.
Pros and cons of hydro power - Pros:
Renewable
Cons:
Must be in hilly areas
Pros and cons of fossil fuels - Pros:
Available 24 hours.
Cons:
Non-renewable
Pros and cons of geothermal power - Pros:
Doesn't take up space.
Cons:
Dangerous.
Pros and cons of nuclear power - Pros:
Available 24 hours
Cons:
Non-renewable.
Speed equation - Distance/time
Acceleration equation - Change in velocity/time taken
Distance, time graphs - Gives the speed.
Forces to Fission
Weight equation - Mass x g
Moments equation - Force x perpendicular distance
Resultant force definition - The single force that has the same effect as all of the forces acting on
an object.
Hooke's Law - The elastic limit is the limit of proportionality.
Moments - Way to increase the moment is by increasing the distance or by increasing that
force
Experiment for Hooke's Law - Suspending spring and add weights
Efficiency equation - Useful energy out/total energy in
Conservation of energy - Energy can't be created or destroyed
Conduction - Heat energy passes from atom to atom but the material doesn't move.
Convection - Gas expands when heated, the volume increases so the density
decreases.
Radiation - Direct transfer of heat energy.
Insulation - Air is an insulator, trapped air is a really good insulator because convection can't
happen.
Pros and cons of wind power - Pros:
Renewable
Cons:
Not always windy
Noisy.
Pros and cons of wave power - Pros:
Renewable
, Cons:
Have to cover large areas of the sea.
Pros and cons of solar power - Pros:
Renewable
Cons:
Not always sunny.
Pros and cons of hydro power - Pros:
Renewable
Cons:
Must be in hilly areas
Pros and cons of fossil fuels - Pros:
Available 24 hours.
Cons:
Non-renewable
Pros and cons of geothermal power - Pros:
Doesn't take up space.
Cons:
Dangerous.
Pros and cons of nuclear power - Pros:
Available 24 hours
Cons:
Non-renewable.
Speed equation - Distance/time
Acceleration equation - Change in velocity/time taken
Distance, time graphs - Gives the speed.
