Moment of Inertia: Two uniform solid spheres have the same mass, but one has twice the radius of the other. The ratio of the larger sphere's moment of inertia about a central axis to that of the smaller sphere is
A. 4/5.
B. 8/5.
C. 1/2.
D. 2.
E. 4.
Answer: E
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A shell and tube heat exchanger consists of one shell with 100 thin-walled tubes of 15 mm diameter in a double pass arrangement. The total surface area is 45 m^2 and the overall heat exchanger conductance is 200 W/m^2?K. Water enters the tubes at 15ºC and 6.5 kg/s. Hot gases having properties of air at 200ºC and 5 kg/s flow through the shell. Determine (a) gas outlet temperature and (b) water outlet temperature.
What will be an ideal response?
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A) 100 million light-years B) 200 million light-years C) 200 light-years D) 100 light-years
Which of the following frames would be an appropriate inertial reference frame for analyzing the effects on the earth of its gravitational interaction with the moon? In each case, answer A if the frame is appropriate, or B if it would be bad for this purpose. Except for the first case, assume the frames are nonrotating.
(a) A frame attached to the earth’s surface (b) A frame attached to the earth’s center of mass (CM) (c) A frame attached to the earth–moon system’s CM (d) A frame attached to the sun’s CM (e) A frame attached to the entire solar system’s CM
The fundamental particles that are the building blocks of hadrons are __________
Fill in the blank(s) with correct word