Day One:

Day One:

 

Equipment

We used a soda can and foam cup to hold the water. and a graduated cylinder to measure the volume of the water, a thermometer probe to measure temperature of water, an immersion heaters to generate heat and a ceramic cup to hold the foam cup.

Graph

The slope of the line represents the heat current, H, which is the change of the temperature vs. time.

Calculation

Uncertainty

  We used propagation uncertainty formula to find the uncertainty.

Summary

We put hot water in the foam cup and cold water in the soda can. We submerged the soda can to the cold water, so there is a heat flow because of the temperature difference. The aluminum can is the only surface that separated the cold water and the hot water. 

Heat Transfer as Energy Exchange 

Graph

The slope of the graph represent the heat capacity of water. This means that temperature and heat have a linear relationship.

Summary

We heat the water with immersion heaters that rated to 195.2 W. Electric energy is converted to become Heat energy. From the wattage of the heater we can find the Heat, dividing power (195.2W) over time (20s).