For the following circuit, assume the diodes are identical and ideal. let v1 = 12v, v2 = 3v, r1 = 6kω and r2 = 6kω. assume that the diode voltages and currents follow the standard convention on polarity and direction. solve for id1. give the answer in units of ma but omit units.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47