# Physics: Joule’s Constant Data Sheet

Complete the following data sheet:

Specific heat of the material of the calorimeter, s = 0.093 cal/(gm ⋅ C°)
Water equivalent of the heating coil, stirrer, etc., m 3 = 6.8 gm
Mass of the empty dry calorimeter, m1 = 123.4 gm
Mass of calorimeter plus water, m = 280.1 gm
Mass of water in the calorimeter, m2 =

No. Time (min) Temperature (C °) Voltage (V) Current (A) Power (watt)
1 0 22.6 5.2 1.1
2 3 24.1 5.1 1.1
3 6 25.4 5.2 1.2
4 9 26.8 5.0 1.0
5 12 27.8 5.2 1.1
Interval No. Time Interval (min) Average Power (watt)
1 0 – 3
2 3 – 6
3 6 – 9
4 9 – 12

Length of a time interval, t =
Total average power, P = Total electrical energy supplied, W =
Initial temperature, T1 = 22.6 °C
Final temperature, T2 = 28.2 °C
Amount of heat generated in calories, H =
Joule’s Constant, J =
Percent error in J (standard value is equal to 4.186 J/cal) =
Give values for all missing items on the sheet.
Give Power = {P1, P2, P3, P4, P5}
Give Average Power = {AP1, AP2, AP3, AP4}