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How many governing field equations can be formulated from the conservation laws? How many unknown field variables are there? and What are the missing equations?
A 12-ft^3 rigid tank contains refrigerant-134a at 40 psia and 55 percent quality. Heat is transferred now to the refrigerant from a source at 120 °F until the pressure rises to 60 psia. Assuming the surroundings to be at 75 °F, determine the a) amoun..
A particle traveled in a straight line in such a way that its distance (S) from a given point on that line after time (t) was S= 20t^3 -t^4 The rate of change of acceleration at time t=2 is what value?
a 4 lb block with an initial velocity of 5 fts is sliding down a 30 degree slope before being slowed by a spring. if
A cylindrical tank of diameter 1 m has a well-rounded orifice of diameter 2 cm in its base. How long will it take an initial depth of acetone equal to 2 m to drain completely from the tank? How long would it take if the orifice were sharp-edged? If n..
A wheelof radius 10 cm can rotate freely about its center as shown in figure. A string is wrapped over its rim and is pulled by a force of 5.0 N. It is found that the torque produces an angular acceleration 2.0 rad/s2 in the wheel. Calculate the m..
nloadnmotor 3 inertia of motor1.2 kgm2 inertia of load 10 kgm2 dampening and load torque can be neglected.draw the
A home has a total of 7.5 KW of lighting and the lights stay on 2/3 of the time. If electricity is priced at 12 cents/KWh, then how much money could be saved annually with a 25% reduction in use?
a coast guard cutter detects an unidentified ship at a distance of 19.6 km in the direction 17.8deg east of north. the
1. An air compressor operates at steady state with air pressure of 50 bar. Kinetic and potential energy effects are negligible. Determine the pump work input, in kJ per kg of water flowing, using (a) Eq. 6.51c, (b) an energy balance. Obtain data f..
the jib crane is supported by a pin a c and rod ab. the rod can withstand a maximum tension of 40kn. if the load has a
a polymer component that needs to maintain a stress level above 10 mpa for proper functioning of an assembly is
work is consumed by a pump moving liquid he from a tank to a superconducting computer system. before the system is
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