A roller conveyor moves tote pans in one direction at 200 ft/min between a load station and an unload station, a distance of 350 ft. With one worker, the time to load parts into a tote pan at the load station is 3 sec per part. Each tote pan holds 10 parts. In addition, it takes 15 sec to load a tote pan of parts onto the conveyor. Determine the flow rate of parts on the conveyor system [Select ] pieces per hour (pieces/hour ).

A painting contractor charges Php 120 per sq.m. for painting the four walls and ceiling of a room. If the dimension of the ceiling are measured to be 4, and 5m, the height of the room is measured to be 3m, and these measurements are correct to 0.5cm, find approximately, by using total differential, the greatest error in estimating the cost of the job from theses measurements.

The rectangular tank shown here, with its top at ground level, is used to catch runoff water. Assume that the water weighs 62.3 lb/ft³. a. How much work does it take to empty the tank by pumping the water back to ground level once the tank is full? b. If the water is pumped to ground level with an (8/11)-horsepower (hp) motor (work output 400 ft-lb/sec), how long will it take to empty the tank (to the nearest minute)? c. Show that the pump in part (b) will lower the water level 15 ft (halfway) during the first 20 minutes of pumping. d. What are the answers to parts (a) and (b) in a location where water weighs 62.16 lb/ft³? 62.42 lb/ft³? a. Set up an integral to find the work done. W = Ground 5 ft level 0 30 14 ft