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Three surfaces of an instrument package are cooled by soldering half-sections of copper tubing to it as shown in Fig. 9.31. Compute the Reynolds number for each section if ethylene glycol at 77°F flows with an average velocity of 15 ft/s. Then compute the energy loss over a length of 54 in.
In an effort to cool a 12-fluid-oz drink in a can, a person grabs the can and starts shaking it in the iced water of the chest at 32°F. Using the properties of water for the drink, determine the mass of ice that will melt by the time the canned dr..
Construct the homogeneous solution in terms of four constant that could be determined from initial conditions and show the equations of motion
a tank is rigid and contains r134a at 800 kpa and saturated conditions with quality equal to .75. from this condition a
The disk is originally rotating at v0 = 12 rad> s. If it is subjected to a constant angular acceleration of a = 20 rad> s2, determine the magnitudes of the velocity and the n and t components of acceleration of point B when the disk undergoes 2 revol..
a 3000 kg car a and 15000 kg freight car b are moving towards each other with velocities 20 kmh and 10 kmh
An electric motor draws a current of 10 amps with a voltage of 110 V. The output shaft develops a torque of 9.7 N*m, a rotational speed of 1000 rpm, and operates at a steady state.
A spherical balloon inflated sos that the volume is increasing at the rate of cubic meter/min. At what rate is the diameter increasing when the diameter is 12 m?
problem 1heat is being generated uniformly throughout a sphere at volumetric rate 4. the radius of the sphere is r and
determine the velocity of ship in sea water and also the resistance in sea water if density of air 1.3 kg/m and kinematic viscosity of sea water and air as 0.012 and 0.018 stokes respectively.
one mole of ideal gas with known constant volume specific heat is confined in the cylinder by the weightless
Assess the effect of increasing NL by a factor of 2, while reducing SL to 30 mm. For this configuration, explore the effect of changes in the air velocity.
Has a diameter of Dp = 0.25 m and a height of Lp = 2 m, extending from stove to ceiling. The stove is in a large room whose air and walls are at Too = Tsur = 300 K. Neglecting heat transfer from the small horizontal sec- tion of the pipe and radia..
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