NO LINKS PLS. PLEASE NOTE THAT THIS IS NOT MULTIPLE CHOICE. A satellite with a mass of 600 kg is placed in orbit around an unknown planet. The radius of the orbit is 5 x 107 m and its period of rotation is 500 Earth days.
a)Calculate the orbital velocity.
b)Calculate the mass of the planet.
c)Calculate the gravitational force on the satellite.
d)If the satellite decreases its orbital radius, how would that change its orbital velocity?

You yeah with the side of the yeah with a little bit of yeah.

For me a person with a phd and who knows what there talking about.i know the chances of a radiation leak is low but if it does the area within a 96.3 mile radius would be unusable because of contamination

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current