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Three coupled street cars are moving at a speed of 32 km/hr down a 7 degree incline. Each car has a weight of 198 kN. The cars must stop within 50 m beyond the position where the breaks are fully applied so as to cause the wheels to lock. What is the maximum number of break failures that can be tolerated and still satisfy this specification? Assume that the weight is loaded equally among the wheels and that we have 24 brake systems, one for each wheel.
the mean errors per page made by a clerk in the word processing pool for a large company is thought to be 2.4 with the
1. a mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.94 cm. if the spring
in a certain population 60 of people have blond hair.a what is the probability that in a group of 10 people from this
a large food-processing plant requires 1.5 lbms of saturated or slightly superheated steam at 140 psia which is
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1 given amp find a r-134a at t 60oc and v 0.072 m3kg. find p and h.b ammonia at p 8 bar and v 0.005 m3kg. find
the corresponding rankine cycle for an actural power plantusing water runs at a high pressure of 6.3mpa a low pressure
suppose that a car rental agency offers insurance for a week that will cost 10 per day. a minor fender bender will cost
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Calculation of percentage heat reduction, Water at 90 C flows through a 50mm bore steel pipe of wall thickness 8 mm. Ambient temperature is 18 C. Calculate the heat loss per metre length of pipe
a counter flow heat exchanger is used to cool air at 540 k and 400 kpa to 360 k using a 0.05 kgs supply of water at 20
determine the maximum pressure across a 10 hp pump that has an inlet diameter of 1.0 inches and velocity of 10 fps. the
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a simple steam power plant operates on 20 kgs of steam. heat transfer to the steam in the boiler is 69 mw and heat
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hot water at 60 c enters a thin copper tube with an inside dia of 6mm and a length of 20m. the copper tube is exposed
an empty parallel plate capacitor is connected between the terminals of a 3.1-v battery and charged up. the capacitor
air enters a compressor operating at steady state with a volumetric flow rate of 8 m3min at 23degc and 0.12 mpa. the
draw the projections of a rhombus having diagonals 125mm and 50 mm long, the smaller diagonal of which is parallel to both the principal planes, while the other is inclined at 30 to the H.P.
In flows past solid bodies, the force exerted on the body by the fluid motion depends upon the fluid velocity u, the density p, the viscosity
it has been determined that a point in a load-carrying member is subjected to the following stress condition sx 400 mpa
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