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Verifiers
NIP correctness in Poland
Jak sprawdzić poprawność numeru NIP?
Verifier allows you to validate the tax identification number entered
Tax identification number is a code used to identify taxpayers in Poland, which consists of 10 digits.
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Verifiers
Verification ISBN preview
Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?
Jak zweryfikować numer ISBN?
Calculator allows you to verify the ISBN number entered.
63050
Verifiers
Verification of the social security number in Poland
It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.
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Verifiers
Verifier numbers EAN-13 preview
Verifier numbers EAN-13
Calculator allows you to verify the number entered EAN-13.
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The energy stored in the capacitor
Calculator in supply capacitor, the capacitance and load resistance calculates the energy stored in the capacitor and the time constant of the RC circuit.
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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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Law Boyle's / Mariotte
Calculator based on the values entered pressure and volume of the selected parameter is calculated using Boyle's Law states / Mariotte.