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Two torsional springs, M = ku, are used to assist in opening and closing the hood of this truck. Assuming the springs are uncoiled (u = 0°) when the hood is opened, determine the stiffness k (N # m>rad) of each spring so that the hood can easily be lifted, i.e., practically no force applied to it, when it is closed in the unlocked position. Use appropriate numerical values to explain your result.
your team has been requisitioned to do the fundamental design of the power plant for a community of 25000 homes. you
the piston diameters in fig. p3-119 are d1 3 in and d2 2 in. the pressure in chamber 3 is 30 psia. chamber 1 contains
at 45 degrees celsius latitude the gravitational acceleration as a function of elevation z above seas level is given by
a room with insulated walls is initially at the outdoor temperature of 21degc. the room contains a 100-w light-bulb a
consider steady heat conduction in a plane wall whose left surface node 0 is maintained at 40 degrees c while the right
a hot surface on a stovetop faces upwards. it is a pan whose diameter is 10 inches. the surface of the pan is dull with
the annual cost of operating a heat pump at year-end prices is r with units of yr. the costs are expected to inflate at
a. What is the melting point at standard conditions for ammonia? Boling point is given -33.4C. b. What is the enthalpy change for boiling ammonia at 0C?
Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4MPa. 500 degree Celsius and 80m/s and the exit conditions are 30kPa, 92 percent quality and 50m/s. the mass flow rate of the steam is 12kg/s. determine the chan..
a 200mm long 10mm dia. tensile sample experienced plastic deformation at a strain of 0.01. the applied load was 78.5
a consider a simply-supported low-alloy steel shaft ten feet in length and two inches in diameter. the shaft supports
Consider a steam power plant that operates on the ideal reheat rankine cycle. Steam enters the high-pressure turbine at 6 mpa and 400°c and leaves at 2 mpa. Steam is reheated to 400°c and expands in the low-pressure turbine to 20 kpa.
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