Two objects are in contact. which of the following conditions will yield the greatest rate of heat flow between the objects?

a. object a is at -20, and object b is at 20 degrees c

b. object a is at -20 degrees c, and object b is at 0 degrees c

c. object a is at 0 degrees c, and object b is at 0 degrees c

d. object a is at -10 degrees c, and object b is at 10 degrees c

What is the radius of the circular path ofa charged particle in a magnetic field?

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.

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 =