Energy.
Jouls.
about 500
There is no defined unit called the calimeter.
Electrical power is expressed in watts or in jouls per secondAnother AnswerThere is no such thing as 'electrical power'. Power is simply a rate: the rate of doing work. Power can be measured in watts (in the SI system) or in horsepower (in the Imperial system). There is no reason why the power of a heater can't be measured in horsepower or the power of a car can't be measured in watts.
The answer to the question is Probably not. Someone can correct me on this later if they have experienced or found out that they do.
The efficiency is 80%. To find the efficiency, 400/500 = 80%.
The energy content of bread can vary depending on the type and size, but on average, a slice of bread contains around 70-80 kilojoules.
Resistance is measured in Ohms.Resistance is measured in Ohms.Resistance is measured in Ohms.Resistance is measured in Ohms.
Cup is measured by volume. It is measured in ml.
It depends on what you are measuring! Distance is measured in metres Time is measured in seconds Mass is measured in kilogrammes Volume is measured in litres Force is measured in newtons Energy is measured in joules Temperature is measured in kelvin Power is measured in watts Electromotive force is measured in volts Electric current is measured in amperes ...and so on
Work is measured in Joules.
Power is measured in watts when work is measured in joules and time is measured in seconds.