Let's calculate

In the following worksheet, we will also try to use the formula for calculating the amount of heat. Hopefully, based on the above, the students will understand what is meant by this formula and why the formula looks like this.

The worksheet can also calculate the amount of heat by entering the corresponding parameters, thanks to which it is possible to quickly calculate the amount of heat released or absorbed during the cooling or heating of different bodies or to check the result of your own calculations.

Calculation of heat input

We calculate the change in internal energy of a body made of three different materials through heat transfer. The temperature change of the bodies is degrees.

In the following, we will try to answer the question about the cost of taking a shower in the interest generator. For this we need to start with units of energy.

Nobody likes converting units, but there's no other way to deal with real life than to do it anyway. It is a fact that electricity bills say kilowatt-hours, not joules.

Students probably already know how to use various unit conversion calculators that can be found through google. If you write " J to kwh " in the search, the first match is a perfectly good and reasonable calculator. We think that the ability to use such aids is something that could be used when dealing with more complex units, such as kilowatt-hours.

For the sake of completeness of our study materials, we have also created one such simple calculator. In any case, the topic given here should be discussed with the students.

My friend kilowatt-hour

Get to know the energy unit kilowatt-hour. Learn how to convert energy from joules to kilowatt hours and back, either by hand or using a calculator.

Now, finally, the price calculation:

Cost

So how much does an average shower cost?