A plastic sphere floats in water with 45.0% of its volume submerged. This same sphere floats in glycerin with 35.7% of its volume submerged. (a) Determine the density of the glycerin.

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.