Answer: In a certain experiment, a small radioactive
Chapter , Problem 20(choose chapter or problem)
In a certain experiment, a small radioactive source must move at selected, extremely slow speeds. This motion is accomplished by fastening the source to one end of an aluminum rod and heating the central section of the rod in a con- Fig. 18-30 20. trolled way. If the effective heated section of the rod in Fig. lS-30 has length d = 2.00 cm, at what constant rate must the temperature of the rod be changed if the source is to move at a constant speed of 100 nm/s?
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