5) According to Kepler's law, the square of the time it takes for an object to orbit, T, is directly related to the cube
between the object and what it is orbiting.
the distance,
This is correctly shown in equation form by
A)
13 - k*r2
B)
T2 = kºr3
o
3 = k/12
ig
4
D)
T² = k/13
6)

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =