An amplifier has an input power of 5 mw. the output power is 100 mw. what is the decibel gain to the nearest decibel?

The decibel gain to the nearest decibel = 13 db

Explanation:

Gain of an amplifier: This is defined as the measure of the ability of an amplifier to increase the power of a signal from the input to the output port by adding energy converted from some power supply to the signal.

It is represented mathematically as.

db = 10×log (p₂/p₁) Equation 1

Where dp = decibel gain of the amplifier, p₁ = input power of the amplifier, p₂ = output power of the amplifier.

Given: p₁ = 5 mW, p₂ = 100 mW.

Substituting these values into equation 1

db = 10×log(100/5)

db = 10×log(20)

dp = 10 ×1.301

dp = 13 db gain

Therefore the decibel gain to the nearest decibel = 13 db

a) cold, dry

explanation:

continental polar masses are cold and dry air masses because the cold air cannot hold much moisture. as they move into warmer air, they can trigger precipitation.