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Amanda [17]
3 years ago
11

An important concept to aid understanding of electromagnetics is electrical length. Electrical _________ is a unitless measure t

hat refers to the length of a wire or device at a certain ___________ . It is defined as the ration of the physical ___________ of the device to the_____________ of the signal frequency.
Engineering
1 answer:
kondor19780726 [428]3 years ago
3 0

Answer: Electrical length is a unitless measure that refers to the length of a wire or device at a certain frquency. It is defined as the ratio of the physical length of the device to the wavelength of the signal frequency.

Explanation:

In nature, the maximum speed achievable for any interaction or perturbation along a medium (like a wire) can't be higher than the speed of light, otherwise it would be violating Einstein's Relativity Theory.

So, in a given circuit, the voltage and current aren't set up instantaneously, and a finite time exists since a battery is connected to a circuit till a stable current  traverses a load resistor connected to it.

Now, the electrical length, defines how important in is this delay, in the calculation of the voltage through the resistor, for instance.

We can write the electrical length (L.E.) as follows:

L.E. = L / (v/f) = L / λ

As we can see, the effect depends not only on the circuit dimensions, but the frequency of the signal as well.

If L.E. is much smaller than λ, this means that we can neglect the effects of the delay, and we can use the circuit theory, namely KVL, KCL and Ohm's law to analyze the circuit, assuming that the current establishes instantaneously.

Otherwise, the current and voltage concepts are not valid anymore, as we need to think in terms of propagation of electromagnetic waves, like in transmission lines and antennas.

Roughly, if L.E. ≤ 20 λ, we say that we are still in the realm of the circuit theory.

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Hey there ..

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mariarad [96]

Answer:

water sample have more water content

Explanation:

given data

soil 1 is saturated with  water

unit weight of water = 1 g/cm³

soil 2 is saturated with alcohol

unit weight of alcohol  = 0.8 g/cm³

solution

we get here water content that is express as

water content = S_s \times \gamma _w   ....................1

here soil is full saturated so S_s is 100% in both case

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water content = 100 % ×  1

water content = 1 g

and

now we get for alcohol that is

water content  = 100 % × 0.8

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5 0
3 years ago
Write a program that computes the square footage of a house given the dimensions of each room.Have the program ask the user how
baherus [9]
#include

int main () {

printf("Program to calculate the square footage of the house.\n");

int total_rooms;

double length, width;

double total_square_footage = 0.0;

printf("Enter total number of rooms in the house:");

scanf("%d", &total_rooms);

for (int i = 0; i
printf("Enter the lenght and width of room %d: ", i+1);

scanf("%if %if", &lenght, &width);

total_square_footage += lenght*width;

}

printf("Total square footage of the house: %if\n", total_square_footage);

return 0;

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Answer:

Explanation:

Given

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height of oil column is h

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Gauge pressure at bottom is equivalent to 26.9\ mm

P_{gauge}=\rho_{Hg} gh_{Hg}

P_{gauge}=13.6\times 10^3\times 9.8\times 26.9\times 10^{-3}\ Pa

Pressure due to oil and water  at bottom

P=\rho _{oil}hg+\rho _{w}5hg

P=0.79\rho _whg+5\rho _whg=5.79\rho _{w}hg

P_{gauge}=P

13.6\times 10^3\times 9.8\times 26.9\times 10^{-3}=5.79\times 10^3\times 9.8\times h

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6 0
3 years ago
What branch of chemistry is credited with the development of silicone?
mariarad [96]

Answer:

C). Inorganic Chemistry

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