a massless length of twine can withstand a maximum tension of 490 N. the twine is used to spin a 28 kg ball in horizontal circular motion of a radius 1.8m the ball is spun faster until the twine breaks . what was the maximum speed of the ball

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?