If the NASCAR race go through the turns at Talladega Motor Speedway at about 200 mi/hr. (89.4 m/s), What coefficient of friction exists between the car's tires and the
pavement? Given the radius of the turn is 110 m.

Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?