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A trailer truck enters a 2 percent uphill grade traveling at 72 km/h and reaches a speed of 108 km/h in 300 m. The cab has a mass of 1800 kg and the trailer 5400 kg. Determine (a) the average force at the wheels of the cab, (b) the average force in the coupling between the cab and the trailer.
a car is to be hoisted by elevator to the fourth floor of a parking garage which is 48 ft above the ground. if the
A 0.4 W cylindrical electronic component with a diameter of 0.3 cm and length 1.8 cm is mounted horizontally on a circuit board. To cool the component air is flowing across the board at a velocity of 150 m/min. If the air temperature is T∞= 45°C, ..
a simply supported beam of length 18 ft. is subjected to a trapezoidally distributed load that has a value of 3 kipft
carbon dioxide enters an adiabatic diffuser at 220 ms 80 kpa and 127 degc at a rate of 1.5 kgs. if the carbon dioxide
air is adiabatically compressed in a non flow process from a pressure of 14.7 psia and a temp of 70 deg to 200 psia and
a heat pump will be used to heat a building during the winter and will then cool the same space during the summer. the
a pipe with closed end has an outer diameter of 80mm and a wall thickness of 3.0mm. it is subject to an internal
hot water at an average temperature of 90oc passes through a row of eight parallel pipes that are 4 m long and have an
suppose that 1000 is deposited into an account assuming the intrest is compounded quarterly that is one-fourth of the
question 1 a force of 750 n acts on point a in the x direction where the cables ab ac and ad are joined as shown in
for flow over a circular cylinder as shown below the velocity outside of boundary layer can be estimated to beux 2
steel rods of 0.05m diameter are heat treated by being passed through a heat-treating furnace in which the atmosphere
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