A neutral atom possesses an atomic number of 13 and an atomic mass of 27. three electrons are lost. from what region of the atoms are they lost? a.) outside the nucleus
b.) inside the nucleus
c.)outside the atom
d.) both inside and outside the nucleus

Why there is no inductive reactance in dc circuits

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is