energy changes in a system Flashcards
(34 cards)
what is the law of conservation
energy can not be created or destroyed , only transformed into another type of energy
what is the formula to find kinectic energy
kinetic energy = 1/2 x mass x velocity squared
what is the symbol equation for kinetic energy
Ek = 1/2 x m x v squared
what is kinetic energy measured in
joules
what is mass measured in
kg
what is velocity measured in
m/s
what is the formula for elastic potential energy
elastic potential = 1/2 x spring constant x extension squared
what is the symbol equation for elastic potential energy
Ee= 1/2 x k x e squared
what is elastic potential energy measured in
joules
what is spring constant measured in
n/m
what is extension measured in
m
what is the formula for gravitational potential energy
gravitational potential energy = mass x gravitational field strength x height
what is gravitational potential energy measured in
joules
what is mass measured in ( for grav. pot. energy)
kg
what is gravitational field strength measured in
9.8 N/kg
what is height measured in ( for grav.pot. energy)
m
what is the formula for change in thermal energy
change in thermal energy = mass x specific heat capacity x change in temperature
what is the symbol equation for gravitational potential energy
Ep= m x g x h
what is the symbol equation for change in thermal energy
triangleE = m x c x triangleanglesign
what is change in thermal energy measured in
joules
what is mass measured in ( for change in thermal energy)
kg
what is specific heat capacity measured in
J/kg degreescelcius
what is change in temperature measured in
degreescelcius
what is the symbol equation for power(2)
p = e or v /t
