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vitfil [10]
4 years ago
13

In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airp

lanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 37 h . During the flight, the refueling planes were able to air-transfer a total of 687 gallons of fuel to the plane in 9 refueling transfers. Assume that the refueling nozzle had a diameter of 1.45 in and each refueling took 2.45 min to perform. Calculate the velocity of the fuel through the nozzle. Assume that the fuel filled the entire cross-sectional area of the nozzle.
Physics
1 answer:
professor190 [17]4 years ago
8 0

Answer:

Explanation:

Total time of transfer oil fuel = 2.45 x 9 = 22.05 minutes

= 22.05 x 60

= 1323 s

Total volume of ful transferred = 687 gallon

= .0037854 x 687

= 2.6 m³

radius of pipe = .5 x 1.45 inch

= .5 x 1.45 x 2.54 x 10⁻² m

r = .018415 m

cross sectional area

= π r²

a = 3.14 x .018415²

= 10.648 x 10⁻⁴ m²

If v be the velocity

volume of fuel coming out  a x v x t  , a is cross sectional area , v is velocity and t is time .

10.648 x 10⁻⁴ x v x 1323  = 2.6

v = 1.845 m / s

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Answer:

C. Code of ethics

Explanation:

The code of ethics of a company is the document where all the values that the members of the company should live and obbey, they are often guideliness on how to act and beheave and how to treat customers, providers and co-workers. IT also has all of the standards for all managers ethical responsabilities, and ethical responsabilities of the general of the employees of the company.

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4 years ago
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Why would you expect sodium (Na) to react strongly with chlorine (Cl)?
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3 years ago
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A transformer has input voltage and current of 12 V and 4 A
Advocard [28]

Explanation:

It is given that,

Input voltage, V_i=12\ V

Input current, I_i=4\ A

Output current, I_o=0.8\ A

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\dfrac{N_s}{N_p}=\dfrac{I_p}{I_s}

Substituting all the above values

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So, the number of turns in primary side of the transformer is 5885.

4 0
3 years ago
A force off 700 newtons is applied to a 600 kg bowling ball. What is the acceleration of the bowling ball once the force is appl
Readme [11.4K]

Answer:

<h2>1.17 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{700}{600}  =  \frac{7}{6}  \\  = 1.1666666...

We have the final answer as

<h3>1.17 m/s²</h3>

Hope this helps you

6 0
3 years ago
Write down an example scenario of an object that has acceleration
Grace [21]

Answer:

An object which experiences either a change in the magnitude or the direction of the velocity vector can be said to be accelerating. This explains why an object moving in a circle at constant speed can be said to accelerate - the direction of the velocity changes.

if a car turns a corner at constant speed, it is accelerating because its direction is changing. The quicker you turn, the greater the acceleration. So there is an acceleration when velocity changes either in magnitude (an increase or decrease in speed) or in direction, or both.

Explanation:

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3 years ago
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