What are the steps to perform the work?

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ФИО:Телефон:Емаил:Полное описание сути нарушения прав (почему распространение данной информации запрещено Правообладателем):

Accepted Answer

The steps to perform the work are:

Examine the electric kettle. Determine the electrical power of the electrical appliance P according to the passport data.
Pour water into the kettle with a volume V, equal to 1 liter or 1.5 liters.
Use a thermometer to measure the initial water temperature t₁.
Turn on the kettle into the electrical network and heat the water to a boil.
Determine the boiling temperature of water t₂ from the table.
Note the time interval Δt during which the water was heated.
Using the measurement data, calculate:
- a) The work performed by the electric current, knowing the power of the kettle P and the water heating time Δt, using the formula: $$A_{electric} = P \cdot \Delta t$$
- b) The amount of heat received by the water and equal to the useful work: $$Q_{heated} = cm(t_2 - t_1)$$
Calculate the efficiency of the electric kettle using the formula: $$\eta = \frac{Q_{heated}}{A_{electric}} \cdot 100\% = \frac{cm(t_2 - t_1)}{P\Delta t} \cdot 100\%$$
Record the measurement and calculation results in a table.