The mass per unit length of a uniform wire is 0.135 $g / \mathrm{cm}$. A transverse wave of the form $\mathrm{y}=-0.21 \sin (x+30 t)$ is produced in it, where $x$ is in meter and $t$ is in second. Then, the expected value of tension in the wire is $x \times 10^{-2} N$. Value of $x$ is . (Round-off to the nearest integer)