At 10 meters,a signal has a strength of 100 mW.About how strong will it be at 40 meters?
A)about 0.5 mW
B)about 5 mW
C)about 25 mW
D)about 6 mW

Name: At 10 meters,a signal has a strength of 100 mW.About how strong will it be at 40 meters? A)about 0.5 mW B)about 5 mW C)about 25 mW D)about 6 mW
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The Answer of At 10 meters,a signal has a strength of 100 mW.About how strong will it be at 40 meters?
A)about 0.5 mW
B)about 5 mW
C)about 25 mW
D)about 6 mW

At 10 Meters,a Signal Has a Strength of 100 MW