1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
Which characteristic does inertia describe
nadezda [96]

Answer:

Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them.

Explanation:

mark me brainlist if i help

3 0
3 years ago
Read 2 more answers
What happens if a mid-ocean ridge occurs on land
Gnesinka [82]

Answer:

Despite being such prominent feature on our planet, much of the mid-ocean ridge system remains a mystery. While we have mapped about half of the global mid-ocean ridge in high resolution, less than one percent of the mid-ocean ridge has been explored in detail using submersibles or remotely operated vehicles. so therefore we do not have enough information about them to know what will happen

Explanation:

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary. Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt. The speed of spreading affects the shape of a ridge  slower spreading rates result in steep, irregular topography while faster spreading rates produce much wider profiles and more gentle slopes.

4 0
3 years ago
Two 100kg bumper cars are moving towards eachother in oppisite directions. Car A is moving at 8 m/s and Car B at -10 m/s when th
DerKrebs [107]

Answer:

-10 m/s

Explanation:

When two cars collide then the momentum of two cars will remains conserved

  • Mass of two cars = 100 kg
  • Speed of car A = 8 m/s
  • Speed of car B = - 10 m/s
  • After collision the speed of car B = +8 m/s

By momentum conservation equation

               m1v1i+m2v2i=m1v1f + m2v2f

               (100)(8)+(100)(-10)=(100v)+(100)(8)\\                            v=-10 m/s

7 0
3 years ago
The angle of projection of projectile at which the range and height of projectile are
kozerog [31]

Answer:

76

At what angle height and range of projectile are equal?

It means that the range of the projectile with a given initial velocity is same for a pair of projection angles θ and 90° – θ.

7 0
3 years ago
You accidentally drop a book down a stairwell. Assuming no air resistance, How fast will the book be moving after 1.1 second?
nlexa [21]
It would be accelerating at -9.8 m/s^2 so it’s velocity would be equal to -9.8•1.1 so the answer is 10.78m/s
3 0
3 years ago
Read 2 more answers
Other questions:
  • The flat-bed trailer carries two 1500-kg beams with the upper beam secured by a cable. The coefficients of static friction betwe
    9·1 answer
  • Calculate the power rating of a home appliance (in kilowatts) that uses 8 amps of current when
    11·1 answer
  • A box (250 kg) sits inside the trailer of a semitruck traveling at a speed of 25 m/s (~ 55 mph). Suddenly, a car in front of the
    5·1 answer
  • Does science support the idea that humans have influenced global warming? Provide specific examples that show how two knowledgea
    12·1 answer
  • In a circuit, a source of voltage...
    12·1 answer
  • Cara is building a model of the solar system, which includes the Sun. She plans to include a written description to provide deta
    8·1 answer
  • Can someone help me with this please
    12·1 answer
  • Carly rode her bike for 300 meters in 30 seconds. One can calculate her​
    9·1 answer
  • What is the formula for converting the Celsius to Fahrenheit scale?​
    15·2 answers
  • ILL GIVE YOU BRAINIEST PLEASE ANSWER!!!! QUICKKKK
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!