27.4 - Measuring Specific Heat Capacity Flashcards
1
Q
What apparatus is needed to find the specific heat capacity of a material?
A
- Electric heater
- Voltmeter
- Ammeter
- Stop clock
- Thermometer
- Power supply
2
Q
What initial measurements must be taken?
A
The mass of the material in question, and its temperature
3
Q
What equations then allow for the calculation of c?
A
ΔE = PΔt = IVt = mcΔT
4
Q
What are the sources of error in this experiment?
A
- Energy is absorbed by the heater
- Energy is transferred to the surroundings
- Energy will be taken by the thermometer
- Inaccuracy of thermometer
- The inaccuracy of the meters
5
Q
How can energy loss to surroundings be taken into consideration?
A
With a graph, and using only the linear section of T against t
