calculating area


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Pressure = hdg
The pressure on A is due to the weight of the liquid acting on it. Mass of the liquid = Volume x Density = A x h x d Weight in newtons = A x h x d x g (which is force) The above expression also applies to any depth in the liquid. Hence, the pressure at any point in a liquid at rest de..
Optics Summary
. It is measured in candela or candle power (C.P.) Illuminance or Intensity of illumination (E) of a surface is the luminous flux incident normally on unit area of the surface. E is measured in lux or meter candle and photo or cm candle, 1 photo = 10 4 lux. Luminance of a surface refers t..
Alternating Currents Summary
frequency of energy oscillations Impedance triangle is a right-angled triangle whose base represents ohmic resistance R, perpendicular represents reactance (X L -X c ) and hypotenuse represents impedance (z) of the RLC circuit. From this triangle, we can calculate z and f as stated above. When a condenser of capacity C c..
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