Technician a says that canister purging occurs during wide open throttle conditions. technician b says that canister purging uses intake manifold vacuum to pull fuel vapors from the canister. which technician is correct?
a) technician a only
b) technician b only
c) both technicians
d) neither technician

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.