Compare (how are they similar) and contrast (how are they different) the 4 terrestrial planets (Mercury, Venus, Earth, Mars) and list some notable facts about them.

Sorry i don’t know what to do

Ithink the answer is d

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.

Answerlosing electrons;