Efficiency of a Light Bulb
Data tables:
1. Heat Capacity of the Light Bulb
The starting temperature of the vial and light bulb, T1 =_________________________
The beaker without water has mass____________________
With the water it is_______________________________
The mass of the water is___________________________
The starting temperature of the water in the beaker, T2 =_________________________
|
Time (s) |
Temp. (oC) |
Time (s) |
Temp. (oC) |
Time (s) |
Temp. (oC) |
|
0 |
60 |
120 |
|||
|
15 |
75 |
135 |
|||
|
30 |
90 |
150 |
|||
|
45 |
105 |
165 |
Fit the data for times above 90 seconds to a straight line.
The intercept, Tf =______________________________
The heat capacity of the calorimeter, Ccal =________________________________________
2. Efficiency of the Light Bulb
The beaker without water has mass____________________
With the water it is_______________________________
The mass of the water is___________________________
|
Time (s) |
Temp. (oC) |
Time (s) |
Temp. (oC) |
Time (s) |
Temp. (oC) |
|
0 |
150 |
300 |
|||
|
30 |
180 |
330 |
|||
|
60 |
210 |
360 |
|||
|
90 |
240 |
390 |
|||
|
120 |
270 |
420 |
For the following measurements, ten drops of ink were used.
The beaker without water has mass____________________
With the water it is_______________________________
The mass of the water is___________________________
|
Time (s) |
Temp. (oC) |
Time (s) |
Temp. (oC) |
Time (s) |
Temp. (oC) |
|
0 |
150 |
300 |
|||
|
30 |
180 |
330 |
|||
|
60 |
210 |
360 |
|||
|
90 |
240 |
390 |
|||
|
120 |
270 |
420 |