Technician A says that empty hazardous waste drums may be disposed of in a public landfill. Technician B says that using a funnel may help prevent spills when filling hazardous waste containers.
Who is right?
O A only
B only
Both A and B
O Neither A nor B

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.