A nonuniform 2.0-kg rod is 2.0 m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that passes through one end of the rod. The moment of inertia of the rod about this axis is 4.0 kg×m2 . The center of mass of the rod is 1.2 m from the axis. If the rod is released from rest in the horizontal position, what is its angular speed as it swings through the
vertical position?
a. 3.4 rad/s
b. 4.4 rad/s
c. 4.3 rad/s
d. 5.8 rad/s
e. 6.8 rad/s
A
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Determine how well the above data are predicated by the appropriate correlation given in the text. Express your results in terms of the per cent difference between the experimentally determined Nusselt number and that from the equation.
An experiment was conducted in which the heat transfer from a sphere in sodium was
measured. The sphere, 0.5 in. in diameter was pulled through a large sodium bath at a
given velocity while an electrical heater inside the sphere maintains the temperature at a
set point. The following table gives the results of the experiment
GIVEN
A sphere is pulled through a sodium bath at a given velocity
Sphere diameter = 0.5 in. = 0.0127 m
Sphere temperature is kept constant
Experimental data given above
FIND
The standard deviation between the data and the appropriate correlation
SKETCH
A monatomic ideal gas undergoes an isothermal expansion at 300 K, as the volume increased from 0.020 m3 to 0.040 m3. The final pressure is 120 kPa. The ideal gas constant is R = 8.314 J/mol ? K. The heat transfer to the gas is closest to
A) 3.3 kJ. B) 1.7 kJ. C) -3.3 kJ. D) -1.7 kJ. E) 0.00 kJ.
List guidelines for selecting images. Describe methods for ensuring your web images are usable and accessible. ?
What will be an ideal response?
The internal energy of n moles of an ideal gas depends on
a. one state variable T. b. two state variables T and V. c. two state variables T and P. d. three state variables T, P and V. e. four variables R, T, P and V.