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Physical

Friis transmission equation

The calculator calculates the power at which the antenna receives the signal output from the second antenna of the power and distance greater than a single wavelength. The higher the frequency, the higher the transmission power loss from the signal transmission.        

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Physical

Calculator resistance resistor ( bars)

Calculator gives the resistance of the resistor based on the introduced color bars.
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Physical

Parallel connection of resistors

The calculator calculates the equivalent resistance of two resistors connected in parallel.            
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Physical

Associated force of the hydraulic piston and the cylinder

Hydraulic cylinder is a mechanical akutatorem used for power transmission line by a linear thrust. Through the movement of the piston up and down over the forces and pressure. This calculator is used to calculate the two forces given angle for each operation.      
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NIP correctness in Poland

Jak sprawdzić poprawność numeru NIP?
Verifier allows you to validate the tax identification number entered
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Circumference of an ellipse

The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.    
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Index calculator dialysis Kt / V

Calculator to the data calculates the dialysis KT / V __________ http://www.dialped.pl/archiwum/teksty/monit/monit9.html              
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Building

Kalkulator powierzchni dachu

Jak obliczyć powierzchnię dachu?
Kalkulator umożliwia obliczenie powierzchni dachowych w wariantach : jednospadowy, dwuspadowy, trzyspadowy, czterospadowy.
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Rainwater tank

The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description