A particle with a charge of -600 nc is placed at the center

Question

Problem: A particle with a charge of -60.0 nC is placed at the center of a non conducting spherical shell of inner radius 20.0 cm and outer radius 36.0 cm. The spherical shell carries charge with a uniform density of -1.00 µC/m³. A proton moves in a circular orbit just outside the spherical shell.

Part A: Calculate the speed of the proton.

________________m/s

Please show work or how to obtain this answer thank you.