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
igor_vitrenko [27]
3 years ago
9

What is the lift (in newtons) due to Bernoulli's principle on a wing of area 87 m2 if the air passes over the top and bottom sur

faces at speeds of 260 m/s and 170 m/s respectively?
Physics
1 answer:
german3 years ago
6 0

Answer:

Explanation:

According to Bernoulli's principle

P₁ + 1/2ρ v₁² + ρgh₁ = P₂ + 1/2ρ v₂² + ρgh₂  , ρ is density of air . P₁ , P₂ are pressures at two surfaces .

h₁ = h₂

P₁ - P₂ =  1/2ρ( v₂² -   v₁² ) = Lift pressure

ρ of air = 1.225 kg / m³

P₁ - P₂ =  1/2ρ( v₂² -   v₁² )

= .5 x 1.225 ( 260² - 170² )

=  .5 x 1.225 ( 67600- 28900 )

= 23703.75 N/m²

Lift Force = pressure x area

= 23703.75 x 87

= 2062226.25 N .

You might be interested in
A tectonic plate is part of the Earth’s lithospherehttp://brainly.com/question/add?entry=1642&task_content=A%20tectonic%20pl
lord [1]
Plate tectonics<span>is a </span>scientific theory<span> that describes the large-scale motion of </span>Earth<span>'s </span>lithosphere<span>. This theoretical model builds on the concept of </span>continental drift<span> which was developed during the first few decades of the 20th century. The </span>geoscientific<span> community accepted plate-tectonic theory after </span>seafloor spreading was validated in the late 1950s and early 1960s.<span>The lithosphere, which is the rigid outermost shell of a planet (the crust and upper mantle), is broken up into </span>tectonic plates<span>. </span>
3 0
4 years ago
Write down any four points that should be considered during household wiring
Shalnov [3]
1. Safety equipment is available
2. Person attempting the task has some general knowledge about wiring
3. Not All Cable is Color-Coded
Cable-sheath color coding started in 2001 and is still voluntary. If you have older wiring, don’t assume it complies with the current color coding. However, most manufacturers now follow the standard color code.
4. Stranded wire is more flexible than solid. If you’re pulling wire through conduit, stranded wire makes it easier to get around corners and bends in the conduit. However, if the situation requires pushing wires through conduit, you’ll want to use solid wire.
8 0
4 years ago
Read 2 more answers
An object is released from rest and falls a distance h during the first second of time. How far will it fall during the next sec
Viefleur [7K]

Answer:

E. 3h

Explanation:

We know that

u = 0 m/s.

velocity after t = 1s

v = u+gt = 0+9.81 x 1s= 9.81 m/s

distance covered in 1st sec

= =>> ut+0.5 x g x t²

=>>0 + 0.5x 9.81 x 1 = 4.90m

Let 4.90 be h

distance travelled in 2nd second will now be used

So velocity after t = 1s

=>>1 x t+ 0.5 x g x t²

=>9.81x 1 + 0.5 x 9.81 x 1 = 3 x 4.90

So since h= 4.90

Then the ans is 3x h = 3h

3 0
3 years ago
The theory of plate tectonics suggests that about 200 million years ago, all of Earth's land was confined to a single continent
miss Akunina [59]

The answer is D Pangaea

8 0
4 years ago
Read 2 more answers
How does the sound produced by a vibrating object in a medium reach your ear? ​
BaLLatris [955]

Answer:The vibrating object produces a series of compressions and rarefactions, one after the other in the medium. These pulses travel one behind the other as the sound waves move forward. When this sound wave reaches our ear, it forces the tympanic membrane to vibrate and thus causes the sensation of hearing

Explanation:

5 0
3 years ago
Other questions:
  • Where does energy go when an object hits the ground?
    10·1 answer
  • Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its conten
    15·1 answer
  • Lighting from the sun travels through space to earths atmosphere.
    9·1 answer
  • ) A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. What is the magnitude of the f
    9·1 answer
  • A car is traveling at 20 m/s. It takes the car 120s to go from one intersection to a second. What was the displacement of the ca
    11·1 answer
  • Scouts at a camp shake the rope bridge they have just crossed and observe the wave crests to be 9.70 m apart. If they shake the
    9·1 answer
  • Two children stand on a platform at the top of a curving slide next to a backyard swimming pool. At the same moment the smaller
    13·1 answer
  • A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0-kg child sits on the other end. The
    8·1 answer
  • How does the thickness of wood affect its stability
    15·1 answer
  • 32. A ball is going to fall downward through a vacuum chamber. If it has maximum potential energy at the top and maximum kinetic
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!