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How far was struck by lightning
Calculator based on the specified time from seeing lightning until you hear thunder in the distance calculated discharge occurred.
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Rainwater tank
The calculator calculates the amount of collected rainwater from the roof of the given dimensions.
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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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Battery charging time calculator
Calculator to the data calculates the estimated time of charging.
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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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LBM - body mass without fat
Calculator to the data: weight, height and gender calculates the total body mass without fat (organ weights, blood, bone, muscle, skin).
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ROCE - an indicator of the efficiency of investment
The calculator calculates ROCE on the basis of these pre-tax profits, total capital and current liabilities ROCE (called Return On Capital Employed) - an indicator of the efficiency and profitability of the investment, which is the capital of the company involved.
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The harmonic mean
Calculator based on the entered numbers separated by commas calculate the harmonic mean.
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Basic equations and inequalities with absolute value
Calculator applies to the basic issues of the absolute value of the non-zero parameter "a"