Engineering, 07.10.2019 19:20, datstepparoddoe27
G2) steel rod (1) is fastened to brass rod (2) with a pin at b. the diameter of the pin is 7 /8 in. both rods are fixed at their ends a and c. the cross-sectional area of the steel rod is 1 in2 and the brass rod 1.5 in2 . the coefficient of thermal expansion for the steel is 6.5 x 10-6 /°f and its elastic modulus is 29 x 103 ksi. the coefficient of thermal expansion for the brass is 11.3 x 10-6 /°f and its elastic modulus is 15 x 103 ksi. a) the temperature drops 40°f. write the equilibrium and compatibility equation(s) needed to solve the problem along with supporting sketches. b) calculate the internal force in members (1) and (2) in kips. indicate tension or compression. [ans. to check: f1 = 9.2 k] c) calculate the average normal stress in each member in ksi. indicate tension or compression. d) compute the shear stress in the pin at b in ksi. [ans. to check: τ = 15.3 ksi] e) calculate the movement at b in inches. clearly indicate direction.
Answers: 2
Engineering, 04.07.2019 18:10, siri5645
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.
Answers: 1
Engineering, 04.07.2019 18:10, 0436500
Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
Answers: 1
Engineering, 04.07.2019 18:20, ashleyjaslin
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
Answers: 3
G2) steel rod (1) is fastened to brass rod (2) with a pin at b. the diameter of the pin is 7 /8 in....
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