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A harmonic force of maximum value 25 N and frequency of 180 cycles>min acts on a machine of 25 kg mass.
Design a support system for the machine (i.e., choose c, k) so that only 10% of the force applied to the machine is transmitted to the base supporting the machine.
a room with 42 kg of dry air has 1 kg of water vapor. if the enthalpy of the water vapor at 31 deg celcius is 3406 kjkg
find the specific flow exergy in and out of the steam turbine in example 9.1 assuming an ambient at 293 k. use the
the position of a point p on a line is given by the equation x t sinpi t2. the point starts moving at t0. find the
a mass of 0.2 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 200 kpa. initially 75 of the
a closed rigid container has a volume of 2 m3 and is filled with 4 kg of water at 200 kpa. heat is transferred from the
A closed system undergoes a process in which work is done on the system and the heat transfer Q occurs only at temperature Tb. For each case, determine whether the entropy change of the system is positive, negative, zero, or indeterminate.
Determine the temperature distribution within the fin and indicate the maximum and minimum temperatures and their locations - determine the temperature distributions in the wall, the floor, and the soil and indicate the maximum and minimum temper..
air flows through a well-insulated nozzle operating at steady state. at the inlet the pressure is 5 bar the temperature
A spur gear has 48 teeth with a diametral pitch of 8 and a pressure angle of 20 deg. The face width is 0.75 inches. If the gear is transmitting 25 HP at 250 rpm
a small air turbine with an isentropic efficiency of 80 should produce 270 kjkgof work. the inlet temperature is 1000 k
Describe the application and identify ALL of the key mechanical property requirements of the material in the application. What are the important failure mechanisms that MUST be considered in material selection for this application
Find the shear flow acting in each web/skin segment in the structure. As part of your final answer, in a sketch, clearly illustrate the resultant shear flow acting in each segment of the wall indicating its numerical value and direction.
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