Physics equations to memorise

Physics
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Sample Data

Front what is the equation for speed of a wave?
Back velocity = wavelength * frequency
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Front What is the R(eq) for resistors in parallel?
Back 1/R(eq) = 1/R(1) + 1/R(2) + 1/R(3) ...
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Front How do you calculate counter clockwise and clockwise torque forces?
Back CCW = +ve = L1 = F1 * r1CW = -ve = L2 = F2 * r2
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