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A thin walled tube of inner radius R1, outer Radius R2, and initial temperature Ti is cooled by a fluid of temperature Tf at time t=0. The heat transfer coefficient is h. Find the temperature and the cooling rate of the wire as a function of time. Assume constant thermal properties and neglect the radial temperature gradients and end effects.
water in a piston-cylinder initially starts at t 400of and p 200 psia. the piston is heated until it final volume is
a 60-kg block of nickel at 5c and a 35-kg block of silver at 50c are placed in a very large lake where the water
a model jet engine is shown with a series of processes at steady-state-steady-flow operation. air enters the 1.0 m
a ball of mass m is connected to a string of length l and orbiting in a vertical circle at speed v.a write an
when a potential difference of 144 v is applied to the plates of an air-filled parallel-plate capacitor the plates
0.25 kg of red-hot 700 c coals are taken from the fireplace and left in the middle of a room. the room is 3 m x 4 m x
a gas-turbine power plant operates on a simple brayton cycle with air as the working fluid. the air enters the turbine
given the following operating conditions for a rolling bearing what lubricant would you select and what is the reason
the piston has a mass of 4kg and cross-sectional area of 35cm^2. A compressed spring above the piston exerts a force of 60N on the piston. if the atmospheric pressure is 95kPa, determine the pressure inside the cylinder.
the rockwell hardness of a metal is determined by impressing a hardened point into the surface of the metal and then
one kilogram of saturated liquid methane at 160 k is placed in an adiabatic piston-and-cylinder device and the piston
a bar of steel has the minimum properties se40 kpsi sy60 kpsi and sut80 kpsi. the bar is subjected to a steady
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