A particle, of mass 10 ^ - 3 kg and charge 1.0C , is initially at...

A particle, of mass ${10}^{- 3}kg$ and charge $1.0C$, is initially at rest. At time $t = 0$, the particle comes under the influence of an electric field $\overset{\to}{E}$\left(t\right) = {E}_{0}\sin \left(\omegat\right)\overset{^}{i}$where${E}_{0} = 1.0N{C}^{- 1} and $\omega = {10}^{3}rad{s}^{- 1}$. Consider the effect of only the electrical force on the particle. Then the maximum speed, in $m{s}^{- 1}$, attained by the particle at subsequent times is ____________.