An object at rest requires a force of 15 newtons to set it into motion

What happens when a rubber rod is rubbed with a piece of fur?

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?

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency