How to calculate velocity from a acceleration vs time graph.

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

What is friction? how does it affect the motion of an object?