Physics-Specific heat capacity

Define specific heat capacity

Energy required to raise the temperature of 1kg of a substance by 1degree celcius

Step one of practical

Get a block of the material with 2 holes in it

Step two of the practical

Measure mass of block using balance

Step three of the practical

wrap block in an insulating layer to reduce energy transfer from the block to the surroundings

Step four of the practical

measure initial temperature of the block

Step five of the practical

turn on the power supply(set the p.d of the ps to 10V) and start the stop watch

Step six of the practical

Take recordings of the temperature every minute for 10 minutes

Step seven of the practical

Calculate power supplied to heater

Formula for power

P=VI power(J)= potential difference(V) x current(amps)

Step eight of thr practical

calculate how much energy has been transferred to the heater

how do you calculate the energy transferred to thhe heater?

E(J)=PT energy=power x time

Step nine of practical

Calculate SHC

Equation for specific heat capacity

change in energy= mass x shc x change in temperature

step ten

plot results on graph and find gradient

last step!

SHC= 1 divided by( gradient x mass of block)