SOLUTION: im having trouble solving these problems i dont even know where to begin help is really appreciated! 1) a 5.1-volt input to a long transmission line decreases to 4.9 volts at the

Question 1103825: im having trouble solving these problems i dont even know where to begin help is really appreciated!
1) a 5.1-volt input to a long transmission line decreases to 4.9 volts at the other end. find the decibel voltage loss.
2) losses in a long telephone line reduce a 30-watt input signal to an output of 6 watts. find the db gain. (because it is a loss, the "gain" will be negative.)
3) find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose ph is 10.9.
please give the answer in the form a*10^-x where a is rounded to the nearest hundredth without the units.
4) in 1999, the male population of the united states was about 133 million, and the female population was about 139 million. assuming a malthusian growth model with 1.4% annual growth rate, how many more females than males will there be in 16 years?

Answer by greenestamps(13209) (Show Source): You can put this solution on YOUR website!

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