Use Common Logarithms or Natural Logarithms and a Calculator to Evaluate

question 28

Multiple Choice

Use common logarithms or natural logarithms and a calculator to evaluate to four decimal places
-Use the mathematical model for power gain, $G = \log \left( \frac { P _ { 0 } } { P _ { i } } \right) ^ { 10 }$ , where $P _ { 0 }$ is the output power in watts and $P _ { i }$ is the input power in watts. Determine the power gain $\mathrm { G }$ , in decibels, for an amplifier with an output $\mathrm { P } _ { 0 }$ of 21 watts and an input $P _ { i }$ of $1.2$ watts. Round to five decimal places if necessary.

• A) \(12.43038 \mathrm {~dB}\)
• B) \(12.96665 \mathrm {~dB}\)
• C) \(13.43038 \mathrm {~dB}\)
• D) \(14.01401 \mathrm {~dB}\)

---

Definitions:

CNS Depressants

A category of drugs that slow down brain activity, leading to a decrease in arousal, anxiety, and muscle coordination, often used to treat anxiety, insomnia, and other conditions.

CNS Stimulants

Substances that increase the activity of the central nervous system, enhancing physical and mental alertness.

Hallucinogens

A class of drugs that cause profound changes in perception, mood, and thought, often leading to visual or auditory hallucinations.

Cannabis

A genus of flowering plants in the family Cannabaceae, commonly referred to as marijuana, used both recreationally and medicinally.