1. a mass is on a level plane, it has a weight of 20n. what is the coefficient of kinetic friction if an applied force
of 8n is sufficient to keep the mass moving with a constant velocity?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

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?