If two objects, each with a mass of 2.0x102 kg,
produce a gravitational force between them of
3.7x10‐6 N. What is the distance between them?

How is the gravitational force related to the distance between two objects?

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.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?