If the faucet pressure and flow is so big that it spills out without filling the bucket, the spill could reach 4. Given that the walls of that bucket are extremely cold, the water could freeze over the drain, making that the first bucket to fill up.
Because the inlet and outlet of 2 are the same size, 2 will always be filled last, if at all. Once 5 is filled, it will spill out the edges of the container rather than back flowing.
Depends on the flow from the faucet.
If it is filling 1 faster then water can move between then order will be 1->2->5
If it is slow enough then just 5 fills.
Everything else will be dry. Between 2 to 3 is sealed too. Without lids there is a lot of issues.
I think there’s a potential for 4 to get wet, even though it can’t fill.
If the faucet pressure and flow is so big that it spills out without filling the bucket, the spill could reach 4. Given that the walls of that bucket are extremely cold, the water could freeze over the drain, making that the first bucket to fill up.
So I would say 4.
Because the inlet and outlet of 2 are the same size, 2 will always be filled last, if at all. Once 5 is filled, it will spill out the edges of the container rather than back flowing.
Technically if it’s faster, then at some point 3 will start to get water. Due to 2 overflowing and filling the space between the 2 cups.
6 probably, maybe would, but not 100% sure.
Which means that really 4 can’t fill up over time.