A charged box $)=495g,q=(+2\mathrm{.}50C$ is placed on a frictionless incline plane. Another charged box $)=(+75\mathrm{.}0C$ is fixed in place at the bottom of the incline.

If the inclined plane makes an angle $$ of $35\mathrm{.}0$ with the horizontal, what is the magnitude of the acceleration of the box when it is $45\mathrm{.}0cm$ from the bottom of the incline?

acceleration: $\frac{m}{s^2}$