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Four boxes are placed on a uniform 28-lb wooden plank which rests on two sawhorses. Knowing that the weights of boxes B and D are 9 lb and 90 lb, respectively, determine the range of values of the weight of box A so that the plank remains in equilibrium when box C is removed.
A piston/cylinder has nitrogen gas at 750 K and 1500 kPa. Now it is expanded in a polytropic process with n = 1.2 to P = 750 kPa. Find the final temperature, the specific work and specific heat transfer in the process.
the thin rod has weight w and rest against the floor and the floor and the wall for which the coefficients of static
Water flows in a 0.15-m-diameter vertical pipe at a rate of 0.65 m3/s and a pressure of 530 kPa at an elevation of 25 m. Determine (a) velocity head at elevation of 20 m, (b) pressure head at elevation of 20 m, (c) velocity head at elevation of 55 m,..
A 2000-kg automobile starts from rest at point A on a 6o incline and coasts through a distance of 150 m to point B. The brakes are then applied, causing the automobile to come to a stop at point C, 20 m from B. Knowing that slipping is impending d..
A mild structural steel beam has a solid square cross section of 100mm and is simply supported by 2 supports 3m apart. A. Calculate the dead load that can be safely supported when applied to the middle of the beam?
a strain rosette with measurements in the direction of the applied unidirectional force perpendicular and at 45 degrees
Use the well-ordering principle for the integers to prove the existence part of the unique factorization of integers theorem: Every integer greater than 1 is either prime or a product of prime numbers.
in all but a very few vehicles today crush or crumple zones are employed as a method to reduce energy transfer to the
Identify a cost-effective rectangular duct section with an equivalent pressure loss that has a side depth of 20 in.
the breaking strength x kg of a certain type of plastic block is normally distributed with a mean of 1500 kg and a
A tensile bar was machined so that most of the gauge section had a diameter of 0.500 cm. One small part of the gauge section had a diameter 1% smaller (0.495 cm). Assume power-law hardening with n = 0.17. The bar was pulled until necking occurred.
Water flows from the bottom of a large tank where the pressure is 120 psia to a turbine located 65 ft below the bottom of the tank that produces 40 hp. The pressure at the turbine exit is 42 psia and the water velocity is 36 ft/sec. The flow rate of ..
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