Consider a homogeneous, bare, spherical, source-free, critical, uraniumfueled reactor operating at a power P0. Explain how and why the power increases, decreases, or remains unchanged as a result of each of the separate changes to the reactor.

The ideal gas model is valid if which of the following conditions is true? the gas density is low. the gas density is high. the temperature is low. the temperature is high. the gas density and the temperature are low. the gas density and the temperature are high. the gas density is high and the temperature is low. the gas density is low and the temperature is high.