energy changes in a system

system

an object or group of objects

equilibrium

when in a sytem, nothing channges and nothing happens

closed system

can exchange energy but not matter to or from its surroundings

open system

allows the exchange of enerfu and maytter to or from its surroundings

isolated system

does not allow the transfer of matter or enery to or from its surroundings

electrostatic store

objects with charge interacting with one another have energy in their electrostatic store

RP aim

to determine the specific heat capacity of a substance by linking the amount of energy transferred to the substance with the rise in te,p of the substance

RP variables

independent- time

dependent- temperature

control- PD

RP method

assembletof temp

sewitch off supply

monitor final temp apparatus

measure inital temp of block

turn on power

start timer

take measurements

dissipated energy

spread out, usually refered to as wasted energy