A block of mass m=4.50 kg is released from rest from point A and slides on the frictionless track shown in the figure below assume ha = 6.00 m. Determine the block’s speed at points B and C

A) point B _ m/s
point C _ m/s

B) determine the net work done by the gravitational force on the block as it moves to point A to point C

B) _ J

Biased means unfair but that's all ik

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

The anwser is: wave a has a greater pitch and frequency.