Which of the following are vectors? * A) Speed and displacement
B) Displacement and velocity
C) Distance and speed
D) Velocity and speed

Idon’t quite understand this problem

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?