Suppose the energy density from a charge has a value at a position 3 meters away from a point charge. If the charge is quadrupled, by what factor does the energy density change at the same position 3 meters away?
a. 8/3
c. 4
b. 4/9
d. 16
D
Physics & Space Science
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The diffusion constant for oxygen diffusing through tissue is 
In a certain sample oxygen flows through the tissue at 
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A. 
B. 
C. 
D. 
E. 
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