The Threshold Intensity for a Receiver $\mathrm { I } _ { \mathrm { r } } = 2.5 \times 10 ^ { - 6 } \mathrm {~W} / \mathrm { m } ^ { 2 }$

question 6

Essay

The threshold intensity for a receiver $\mathrm { I } _ { \mathrm { r } } = 2.5 \times 10 ^ { - 6 } \mathrm {~W} / \mathrm { m } ^ { 2 }$ If the intensity produced by an antenna equals $10 \mathrm {~W} / \mathrm { m } ^ { 2 }$ at a range of 1 m, the maximum reliable range of the system equals ____ km.

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Definitions:

Simple Interest

A technique for computing interest in which the interest expense is calculated solely on the initial amount of the principal.

Maturity Value

The total amount that will be paid to the investor at the end of a fixed-term investment, including the principal and any accrued interest.

Promissory Note

A written promise to pay a specific sum of money to a specified person at a definite time or on demand.

Simple Interest

Interest computed exclusively on the principal sum, without adding compounded interest.