If 2 balls have the same volume, but ball A has twice as much mass as ball B, which one will have the greater density

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

The two required components for a generator are

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.