Physics Equations Flashcards
What is the calculation for specific heat capacity? Word equation
Specific heat capacity = thermal energy change divided by (mass x temperature change)
How would you work out the efficiency of a kettle?
Useful energy divided by overall energy
Using work done, what is the word equation for power?
Power= work done Divided by time
In relation to energy transferred, what would the equation for power be?
Power = energy transferred divided by time
How could I figure out the amount of energy supplied to a hoover, using a word equation?
Energy supplied = current x voltage x time
How is thermal energy calculated, using a word equation?
Thermal energy = Specific Heat Capacity x mass x temperature change
How would work done calculated, using a word equation?
Work done = Force x distance
OR
Work done = Force x displacement
How would elastic potential energy be calculated, using a word equation?
Elastic Potential Energy = 0.5 x spring constant x ((extension)squared)
How is the equation of a line calculated?
equation of a line = force applied = extension of spring x gradient
What is the word equation for Gravitational Potential Energy?
GPE=mass x gravitational field strength x height
How is kinetic energy calculated? (word equation)
Kinetic energy = 0.5 x mass x ((velocity)squared)
What is work done the same as?
The amount of work you do = the amount of energy transferred
How do you calculate the CHANGE in Gravitational Potential Energy?
Change in GPE = weight x vertical height gain
Note* (vertical height gain means the distance the object travelled up)
What is the calculation for pressure? give the word equation.
Pressure = force divided by area
