Answer:
0.04s
Explanation:
Specific heat of water c = 4.186J/g.C
The heat energy it would take to heat up 0.5 kg of water from 30C to 72 C is

If the power of the electric kettle is 2.2kW (or 2200W) and suppose the work efficiency is 100%, then the time it takes to transfer that power is

The first image below shows force F1 and the axes.
Answer:
3.62 kN
Explanation: The second figure below express the parallelogram method to calculate the u component of force F1.
The <u>Parallelogram</u> <u>Method</u> is a method to determine resultant force and is applied as described in the question above.
With the three components,
and
and angles, it can be used the <u>Law</u> <u>of</u> <u>Sines</u>, which states:

i.e., there is a relation of proportionality between an angle and its opposite side.
For the triangle below:



u = 3.62
The magnitude of the component acting along the u-axis is 3.62kN.
Acid's release protons, or hydrogen ions.
Hope this helped, have a great day! :D