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1. |
Consider a system of concentric spheres of radius r 1 and r 2 (r 2 is greater than r 1). If r 1 = 5 cm, determine the radius r 2 if it is desired to have the value of shape factor F 21 equal to 0.6 |
A. | 6.45 cm |
B. | 7.45 cm |
C. | 8.45 cm |
D. | 9.45 cm |
Answer» B. 7.45 cm | |