Two boxes are on opposite ends of a plank that is 3.0 m long. The plank is supported in the middle by a fulcrum. The box on the left has a mass, m1, of 25 kg. The box on the right has a mass, m2, of 15 kg. Use the formulas below to determine how far the fulcrum must be positioned from the right side of the plank in order to balance the masses horizontally. (Hint: g=9.8m/s2)

Fg of m1=(m1)(g)
Fg of m2=(m2)(g)
Distance from the right= (Fg)m1 ( I ) ÷ (Fg)m1+(Fg)m2
a.
0.38 m
c.
1.1 m
b.
0.60 m
d.
1.9 m

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

Idk just need points

All are great precautions but you can still lift lighter and different muscles in between hard workdays. this keeps other muscles not usually used in shape.