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A spring is initially compressed from a free length of 8in to a length of 6in, making a net initial compression of 2in. What additional work is done in comressing it 3in more (5 inches total) to a 3in length? Assume the spring modulus k= 20lb/in.
steam enters a diffuser at 20 psia and 240of with a velocity of 900 fts and exits as saturated vapor at 240of and 100
a plate of stainless steel has a thickness of 3.0 cm and is initially uniform in temperature at 500c. the plate is
an 0.5 m3 rigid tank contains equal volumes of freon-12 vapor and freon-12 liquid at 312k. additional freon-12 is added
nitrogen n2 initially occupying 0.5 m3 at 1.0 bar 20 degree c undergoes an internally reversible compression during
a full revolution press has 100 rpm flywheel rotation. the press is equipped with tow hand trip devices mounted on the
an electrical window air conditioner with a cooling capacity of of 8000 kjhr draws 6.00 amps of electrical current at
a horizontal wire of length 0.57 m carrying a current of 6.9 a is placed in a uniform external magnetic field. when the
a 50 cm long 800 w electric resistance heating element with diameter .5 cm and surface temperature 120c is immersed in 60 kg of water temperature to 80c. also determine the convection heat transfer coefficients at the beginning and at the end of t..
Derive the operational transfer function and the sinusoidal transfer function for an RC high-pass filter. Plot the step response and the complete frequency response (magnitude and phase).
there are three gears one big one and two little ones. the two smaller ones interact with the big gear. the big gear
calculate the specific exergy for i water and ii r-134a and iii air at p 0.6 bar and t 10oc. assume to 20oc and po
the truck is to be towed using two ropes. if the resultant force is to be 950 directed along the positive axis
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