9) Determine the reactions at A and B for the truss shown. The two 4 N loads are perpendicular to the upper member. There is a roller at A and a pin at B. 4 N 4 N 40N 8m 8m 20N 8m B A 12m 12m

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2. The rectangular gate AB has a constant width of 2 m into the paper and weighs 1540 kg. It is hinged at B and rests against the smooth wall at A. The Bourdon gage reads the air pressure inside the tank as 95 kPa. Find the water level h which will be just enough to cause the gate to open, using; a) Pressure Prism Method b) Direct Integration Method c) Force Component Method 1.2 m A Liquid, SG 1.4 2.4 ml Water 1-1.8m- B

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3/4 roller chain is to transmit power from a 17-tooth drive sprocket to 34-tooth sprocket. Centers of the sprockets are 13 inches apart. Estimate the number of teeth in contact with the chain for the larger sprocket.

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A Brayton Cycle operates with two stage compression with intercooling back to Ti. The pressure ratio across each stage 4. Air enters the cycle at a pressure of 14 psia and temperature of 100°F. The maximum temperature of the cycle is 1690 °F. The isentropic efficiencies of the compressors and turbine are 0.90. Assume temperature dependent properties (Table A-22 E). a). Draw the T-s diagram b). Determine the back work ratio c)Determine the thermal efficiency of the cycle. don't use handwritten diagaram