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Life
Battery life
Calculator based on the specified battery capacity and consumption estimates the time. Calculator does not take into account changes in CPU speed and action in the case of ACPI computers.
Long description
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Life
Rainwater tank
The calculator calculates the amount of collected rainwater from the roof of the given dimensions.
Long description
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Life
Calculate how much you drink pure ethanol
On the basis of the data entered, the amount of drink and the percentage of alcohol content calculator calculates pure ethyl alcohol that we consume.
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Life
Battery charging time calculator
Calculator to the data calculates the estimated time of charging.
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Verification ISBN preview
Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?
Jak zweryfikować numer ISBN?
Calculator allows you to verify the ISBN number entered.
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Building
Insulation of wall
Jak policzyć izolację ścian?
Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Chemical
The frequency of the relaxation based on the Arrhenius equation
Calculator based on the given temperature, the frequency of vibration and thermal activation energy calculated częsość relaxation.
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Math
Field parabola
The calculator calculates the surface area of the parabola with the given base width and length of the perpendicular [see calculator squareness]. The result is given as the user input unit square.