$49$ A $10\mathrm{.}0$ g block with a charge of $+8\mathrm{.}00105$ C is placed in an electric fieldE$=(3000$i$600$j$)$N$/$C$.$ What are the $($a$)$ magnitude and $($b$)$ direction $($relative to the positive direction of the x axis$)$ of the electrostatic force on the block? If the block is released from rest at the origin at time t $=0,$ what are its $($c$)$ x and $($d$)$ y coordinates at t $=3\mathrm{.}00$ s$?$