An enterprise aiming to produce low and high quality varnish plans not to produce by mixing 121 barrels of alcohol and 49 barrels of resin in certain compositions. One barrel of low quality varnish will consist of 80% alcohol and 20% resin, one barrel of high quality varnish will consist of 30% alcohol and 70% resin. The firm will sell 50,000 units per barrel of low quality varnish and 8,000 units per barrel of high quality varnish. Formulate the problem in a way that maximizes benefit.

What difference(s) did you notice using a pneumatic circuit over hydraulic circuit. explain why the pneumatic piston stumbles when it hits an obstacle.

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.