A small block with mass $0\mathrm{.}0400$ kgkg is moving in the xyxy$-$plane. The net force on the block is described by the potential$-$energy function U$($x$,$y$)=(5\mathrm{.}75$J$/$m$2)$x$2(3\mathrm{.}65$J$/$m$3)$y$3$U$($x$,$y$)=(5\mathrm{.}75$J$/$m$2)$x$2(3\mathrm{.}65$J$/$m$3)$y$3.$

Part A

What is the magnitude of the acceleration of the block when it is at the point xx $=0\mathrm{.}32$ mm$,$ yy $=0\mathrm{.}53$ mm$?$

Express your answer with the appropriate units.

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Part B

What is the direction of the acceleration of the block when it is at the point xx $=0\mathrm{.}32$ mm$,$ yy $=0\mathrm{.}53$ mm$?$

Express your answer in degrees.