What is the cross-string method?
What will be an ideal response?
The cross-string method is a two-dimensional technique used to approximate
the view factor between two surfaces. It involves visualizing strings, or flexible
lines that connect the ends of each surface with their other ends, with ends of
the other area, and then to the opposite but adjacent ends. Its utility is in long
trough type arrangements, or where the two areas are large enough to be
approximated by two-dimensional surfaces.
You might also like to view...
A potter's wheel, with rotational inertia 46 kg?m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the wheel, where it sticks a distance 1.2 m from the rotational axis
If the subsequent angular speed of the wheel and clay is 32 rpm what is the mass of the clay? A) 8.0 kg B) 5.4 kg C) 7.0 kg D) 8.8 kg
How many Torino 2 asteroids are known to exist?
a. 0 b. <5 c. 5-10 d. >10
Spiral galaxy rotation curves are generally fairly flat out to large distances. Suppose that spiral galaxies did not contain dark matter. How would their rotation curves be different?
A) The orbital speeds would fall off sharply with increasing distance from the galactic center. B) The orbital speeds would rise upward with increasing distance from the galactic center, rather than remaining approximately constant. C) The rotation curve would be a straight, upward sloping diagonal line, like the rotation curve of a merry-go-round. D) The rotation curve would look the same with or without the presence of dark matter.
The molecular mass for chlorine is not an integer multiple of the molecular mass of hydrogen but is about 35.5 times the molecular mass of hydrogen. This is primarily because
a. the proton and neutron have different masses. b. there are different isotopes of chlorine. c. of the binding energy of the chlorine nucleus. d. the chlorine nucleus has 35.5 nucleons.