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A 2.4-N force is applied to the plunger of a hypodermic needle. If the diameter of the plunger is 1.3 cm and that of the needle 0.20 mm,
(a) With what force does the fluid leave the needle?
(b) What force on the plunger would be needed to push fluid into a vein where the gauge pressure is 18mm-Hg? Answer for the instant just before the fluid starts to move?
Liquid water enters a valve at 300 kPa and exits at 275 kPa. As water flows through the valve, the change in its temperature, stray heat transfer with the surroundings and potential energy effects are negligible. Operation is at steady state. Modelin..
A bottle of soda is capped when the pressure of carbonation is 0.20 MPa. How long before the pressure has dropped to 0.11 MPa? Identify the surroundings and boundary. List all of the interactions. Physically and mathematically Include all heat transf..
a thick cylinder has an inside diameter of 60 mm and an outside diameter of 100 mm. it is pressurised internally until
an ideal gas is heated from 50 c to 80 c a at constant volume and b at constant pressure. for which case do you think
Nitrogen (N2) gas at 100 kPa and 298 K enters a compressor steadily with a mas flow rate of 2 kg/s. The nitrogen leaves at 800 kPa and 580 K. Asume the compressor is well insulated. Do NOT assume the specific heats of the nitrogen as constant or a li..
1. graphically verify moseleys law for the k beta1 lines of cu mo and w.2. acalculate the mass an linear absorption
why use the penalty method for implementing boundary conditions? what are the advantagesdisadvantages of direct versus
A tank contains helium at 100 degrees C and 10 kPa gage. The helium is heated in a process by heat transfer from the surroundings such that the helium reaches a final equilibrium state at 300 degrees C. Determine the final gage pressure of the helium..
a freshly drawn glass fiber 100 microm in diameter breaks under a tensile load of 40 kn . after subsequent handling a
the length of the assembly shown decreases by 0.40mm when an axial force is applied by means of rigid end plates.
Advanced Stress Analysis Assignment
A rigid insulated tank contains 0.6 kg of air, initially at 200 kPa, 20 C. The air is stirred by a paddle wheel until its pressure is 250 kPa. Using the ideal gas model with Cv = 0.72 kJ/(kg*K), determine, in kJ, (a) the work, (b) the change in exerg..
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