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A woman is holding a 3.6-kg sphere in her hand with the entire arm held horizontally as shown in the figure. A tensile force in the deltoid muscle prevents the arm from rotating about the shoulder joint O; this force acts at the 21° angle shown. Determine the force exerted by the deltoid muscle on the upper arm at A and the x- and y-components of the force reaction at the shoulder joint O. The mass of the upper arm is mU = 1.9 kg, the mass of the lower arm is mL = 1.1 kg, and the mass of the hand is mH = 0.4 kg; all the corresponding weights act at the locations shown in the figure.
consider the turbocharger of an internal combustion engine. the exhaust gases enter the turbine at 450 c at a rate of
As a software project manager in a company that specializes in the development of software for the offshore oil industry, you have been given the task of discovering the factors that affect the maintainability of the systems developed by your comp..
Find the impulse response h[n] for each of the causal LTI discrete-time systems satisfying the following difference equations and indicate whether each system is a FIR or an IIR system.
an insulated piston-cylinder device initially contains 0.3 m3 of carbon dioxide at 200 kpa and 27 oc. an electric
Calculate the number of vacancies per cubic meter in gold at 900°C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 18.63 g/cm3 (at 900°C) and 196.9 g/mol, respectively.
A cantilevered steel pipe tower, 80 m tall is being considered for a new wind turbine. The weight of the turbine is 3,400 kN. The tower under consideration will have a constant outer diameter of 4 m and a wall thickness of 6 cm. The turbine is to hav..
air initially at a dry-bulb temperature of 45 degrees c and hr 10 is adiabatically humidified to hr 60.a determine
a 4 kg object traveling at 60 ms enters an insulated vat of 20 kg of incompressible fluid c 2.0 kjkgk and comes to
a 20-ft long 8-ft-high rectangular tank open to the atmosphere is towed by a truck on a level road. the tank is filled
a shock absorber is to be designed to limit its overshoot to 15 percent of its initial displacement when released. find
What is the distinguishing operational environment of direct liquefaction and what dictates this condition? Delineate the four operational regimes of hydrothermal processing and indicate differences in the products resulting.
the acceleration of a particle is defined by the following relation where a is a constant. at t0 the position of the
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