In order for microwave background radiation to be evidence for the Big Bang, what else must also be trueA singularity must be present at the beginningRed Shift to show the Universe is not expandingA period of cosmic inflation in the first fraction of a secondAn abundance of Hydrogen and Helium

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.