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3 years ago

Verizon LTE

Engineering

1 answer:

Eddi Din [679]3 years ago

8 0

Answer:

5040 watts

Explanation:

Power (P) = electric current (I) × Time (T)

P = 400 × 12.6

P = 5040 watts

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Explanation:

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4 years ago

Select the correct answer.

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3 years ago

Do volts or amps kill you.

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3 years ago

Write a do-while loop that continues to prompt a user to enter a number less than 100, until the entered number is actually less

chubhunter [2.5K]

Answer:

#include <iostream>//including iostream library to use functions such as cout and cin

using namespace std;

int main() {

int userInput = 0;

{

cout << "Enter a number < 100: " ;

cin >> userInput;

if (userInput < 100)//condition if number is less than 100

{

cout << "Your number < 100 is: " << userInput << endl;

}

} while (userInput > 100);//do while loop condition

return 0;

}

Explanation:

A do-while loop executes regardless in the first iteration. Once it has run through the first iteration, it checks if the condition is being met. If, the condition is TRUE, the loop begins the second iteration. If FALSE, the loop exits. In this case, the condition is the userInput. after the first iteration, lets say the userInput is 120, the condition userInput > 100 is true.Therefore, the loop will run again until eventually the number is less than hundred, lets say 25. In that case the condition would be 25 > 100, which would be false, so the loops will break.

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4 years ago

Your company is planning to build a pipeline to transport gasoline from the refinery to a field of storage tanks. The parameters

AleksandrR [38]

Answer:

The model system will need water flowing at a velocity of 2.07 meters per second to guarantee kinematic similarity in the form of equal Reynolds numbers.

Explanation:

The Reynolds number ( $Re_{D}$ ) is a dimensionless criterion use for flow regime of fluids, which is defined as:

$Re_{D} = \frac{\rho \cdot v\cdot D}{\mu}$ (Eq. 1)

Where:

$\rho$ - Density, measured in kilograms per cubic meter.

$\mu$ - Dynamic viscosity, measured in kilograms per meter-second.

$v$ - Average flow velocity, measured in meters per second.

$D$ - Pipe diameter, measured in meters.

We need to find the equivalent velocity of water used in the prototype system. In this case, we assume that $Re_{D,gas} = Re_{D,w}$ . That is:

$\frac{\rho_{w}\cdot v_{w}\cdot D_{w}}{\mu_{w}} = \frac{\rho_{gas}\cdot v_{gas}\cdot D_{gas}}{\mu_{gas}}$ (Eq. 2)

Where subindex $w$ is used for water and $gas$ for gasoline.

If we know that $\rho_{gas} = 690\,\frac{kg}{m^{2}}$ , $\mu_{gas} = 0.006\,\frac{kg}{m\cdot s}$ , $v_{gas} = 0.5\,\frac{m}{s}$ , $D_{gas} = 1\,m$ , $\rho_{w} = 1000\,\frac{kg}{m^{3}}$ , $\mu_{w} = 0.0018\,\frac{kg}{m\cdot s}$ and $D_{w} = 0.05\,m$ , then we get the following formula:

$57500 = 27777.778\cdot v_{w}$

The fluid velocity for the prototype system is:

$v_{w} = 2.07\,\frac{m}{y}$

The model system will need water flowing at a velocity of 2.07 meters per second to guarantee kinematic similarity in the form of equal Reynolds numbers.

3 0

3 years ago