Transcript In Physics, we have to be very careful when we use the
Example 2
An experiment is carried out to measure the heat capacity of a copper block. The initial reading of the joulemeter is 215 100 J and the final reading is 220 830 J. The temperature of the block rises 15ºC.
(a) What is the heat capacity of the block?
Solution 2
(a) The heat supplied by the heater is
E
= 220 830 - 215 100 = 5730 J
C
=
E
= 5730 J 15ºC = 382 J ºC
-1
Example 2
(b) State one assumption made in the calculation.
Solution 2
(b) We must assume that no heat is lost to the environment.