An electromagnetic wave is given in SI units by

E$($x$,$ t$)=3\mathrm{.}50$ sin$(0\mathrm{.}64$x $$t$)$ V$/$m$.$

$($Use the exact values you enter to make later calculations.$)$

$($a$)$ What is the angular frequency?

$1\mathrm{.}92$e$8$

Correct: Your answer is correct.

rad$/$s

$($b$)$ What is the magnetic field at

x $=2\mathrm{.}0$ m

and

t $=3\mathrm{.}0$ s$?$

T