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A spring stiffness k= 500 n/m is mounted against a 10 kg block. if the block is subjected to a force of 1 KN determine the velocity of the block at s=0.3 m when s=0, the block is at rest and the spring is uncompressed. The coefficient of fricktion is 0.2 . Use work and energy principle to find velocity.
consider r-134a as the substance.a find the specific volume ft3lbm and specific entropy btulbm-r when p 90 psia and h
A Rankine cycle with superheat is to be designed using water as the working fluid. The boiler pressure will be 1000 psia and the peak temperature will be 900 °F. (a) Determine the temperature required for the condenser if the expansion through the t..
one litter of iodine vapour at 0.04 atm pressure and 150c is isothermally compressed. a. determine the nature of the
water is the working fluid in a regenerative rankine cycle with one closed feedwater heater and one open feedwater
specifications call for a composite part to be made of kevlar 49 fibers in a matrix of epoxy e0.65 . if the fiber
air is adiabatically compressed in a non flow process from a pressure of 14.7 psia and temperature of 70 degrees to 200
in a close stationary system 2 kg of argon is heated from 20oc to 120oc. determine the amount of heat transfer when
Assume that for a tensile test, d?t/d?t= ?t when necking begins. Based on this condition, determine the true strain at the onset of necking? Explain carefully any assumptions made.
A bioengineer is trying to determine the amount of gap developed between bone and cement when a femoral hip is placed. The system is assumed to consist of concentric cylinders. Calculate the gap developed between bone and cement if the temperatures o..
a. show that the rate at which shaft work is obtained or required for a reversible change of state in a closed system
A steam turbine is operating at a steady state with a mass flow rate of 3682 kg/h at the inlet. The power output of the turbine is 8700 kW. Steam enters the turbine at a pressure of 40 bar, temperature of 320 oC, and with a velocity of 13 m/s.
A reciprocating compressor has been selected to compress 0.085 m3/s of 25oC methane gas from 100 to 6200 kPa. Assuming that the heat capacity remains constant at 2433 J/(kg?K) over the temperature range of compression and that the ratio of C p/C v ..
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