1. The he calorimeter can keep in the heat in the device. I think the external surface is insulating then no hear out of the device can be transfer in the calormeter.
2. Because that contacts the coil surface can have an insulating effect. The heat doesn't transfer with the air.
3. I think it is because electrical conductivity and extensibility for Al is good.
4.I know that silver is most effective metal to conduct the electricity but it is expensive for us I would like to consider the copper.
5. Yes, I think It takes 4200 of energy to heat up 1 of water by 1 .
2. Because that contacts the coil surface can have an insulating effect. The heat doesn't transfer with the air.
3. I think it is because electrical conductivity and extensibility for Al is good.
4.I know that silver is most effective metal to conduct the electricity but it is expensive for us I would like to consider the copper.
5. Yes, I think It takes 4200 of energy to heat up 1 of water by 1 .