- Why was the calorimeter insulated?
- Why do you think the the heating apparatus was coiled? (wound in circles).
- Why do you think the vessel we held the water in was made of aluminium (Al) and not some other material.
- If you had to pick another material to make the vessel out of what would it be? and why?
- Would you expect the value we measure for the SHC of water be exactly 4200 J / kg / K? Justify your answer.
1. Because there was some foamed plastic around the aluminium cup, it good at keeping heat energy. And it is also insulated which mean you won't get electric shock when you processing circuit.
2. Maybe when we were processing circuit, water is electric so the coiled things at the bottom of the cup can got electricity, and become hotter and hotter. And then, it can heating water.
3. Because capacity of heat transmission is more effective than other material.
4.I will choose copper, because specific heat capacity of copper is lower than AI , copper can be heating faster than AI.
5. No, because there is some error that is hard for us avoiding,.
From my investigation:
Q=IUT= 1.8A*3V*10*60s=3240J
C=Q/m*△t=3240/(130.3*(10^-3)*8)=3108.21 J/kg
2. Maybe when we were processing circuit, water is electric so the coiled things at the bottom of the cup can got electricity, and become hotter and hotter. And then, it can heating water.
3. Because capacity of heat transmission is more effective than other material.
4.I will choose copper, because specific heat capacity of copper is lower than AI , copper can be heating faster than AI.
5. No, because there is some error that is hard for us avoiding,.
From my investigation:
Q=IUT= 1.8A*3V*10*60s=3240J
C=Q/m*△t=3240/(130.3*(10^-3)*8)=3108.21 J/kg