Physics slop 1 Flashcards
What is the equation linking kinetic energy, mass a velocity?
Kinetic energy=0.5 x mass x velocity squared (Ek= 0.5mv squared)
What are the units of energy and work done?
Joules (J)
What are the units of mass?
Kg
What are the units of velocity?
meters per second
What is the equation linking gravitational field strength, gravitational potential energy and height?
GPE = mass x height x gravity (Ep = mph)
What is the equation linking energy transferred (work done), power and time with units as well?
Power (W) = energy OR work done (J)/time(s)(P=E/t)
What is the definition of power?
Power is the rate of transfer of energy or the rate of doing work
What’re the equations for calculating efficiency from energy or power
efficiency = useful energy or power output/total energy or power input
mechanical transfer (work done), is…?
The energy transfer when a force moves through a distance
Energy transfer by electric current is…?
Energy transferred when a charge flows
What is the energy transferred by electromagnetic radiation?
Radiation transfer
Heat transfer is…?
Energy transferred when an object is heated
What is a kinetic energy store?
Energy stored in objects which move
chemical energy is stored as…?
Chemical bonds that can take part in reactions
What is a gravitational potential store?
Energy stored in objects raised up against the force of gravity.
