P11 Physics

work done

Work done is the product of the displacement of an object and the component of the force acting in the direction of that displacement.

work done equation

force x distance

Power

the rate at which work is done

Power equation

P=W/t

kinetic energy

the energy an object has due to its motion

gravitational potential energy

Energy stored by objects due to their position above Earth's surface.

elastic potential energy

the energy of stretched or compressed objects

mechanical energy

Kinetic or potential energy associated with the motion or position of an object

Kinetic energy equation

KE=1/2mv^2

gravitational potential energy equation

GPE=mgh

elastic potential energy equation

0.5 x spring constant x extension^2

Unit of power

Watt

unit of work done

Joules (J)

hookes law

Extension is directly proportional to force until the spring reaches it's elastic limit

conservation of energy

a principle stating that energy cannot be created or destroyed, but can be altered from one form to another.

Liquid pressure formula

P = ρgh

buoyant force

the upward force exerted by a fluid on a submerged object

buoyancy formula

fluid density (p) * displaced fluid (V) * gravitational field strength (g).

ideal gas equation

PV=nRT

relationship between pressure and volume

inversely proportional

Relationship between pressure and temperature

directly proportional

Kelvin

SI unit for temperature

Kelvin scale

The temperature scale on which zero is the temperature at which no more energy can be removed from matter

Convert Celsius to Kelvin

add 273

Convert Kelvin to Celsius

subtract 273