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
hichkok12 [17]
3 years ago
10

An airplane has an effective wing surface area of 19.4 m2 that is generating the lift force. In level flight the air speed over

the top of the wings is 67.0 m/s, while the air speed beneath the wings is 51.0 m/s. What is the weight of the plane?
Physics
1 answer:
alexgriva [62]3 years ago
7 0

Answer:

W =23807.68 N

Explanation:

given,

surface area of wing = 19.4 m²

speed over top wing = 67 m/s

speed under wing = 51 m/s

density of air =  1.3 kg/m³

weight of plane

From Bernoulli's principle

P_1 + \dfrac{1}{2}\rho v_1^2 = P_2 + \dfrac{1}{2}\rho_2^2

where 1 and 2 are two different locations at the same geo potential level  

so if we call 1 the lower surface and 2 the upper surface,

we find the pressure differential, P₁ -P₂

\Delta P =\dfrac{1}{2}\rho (v_2^2-v_1^2)

\Delta P =\dfrac{1}{2}\times 1.3 \times (67^2-51^2)

\Delta P =1227.2\ N/m^2

then the force acting on the plane is

F=P A

F=1227.2 x 19.4

F =23807.68 N

weight of the plane

W =23807.68 N

You might be interested in
What is the value of work done on an object when a
tino4ka555 [31]
W = F * s
Here, F = 50 N
s = 15 m

Substitute their values, 
W = 50 * 15
W = 750 J

In short, Your Answer would be 750 Joules

Hope this helps!
7 0
3 years ago
A cloud of interstellar gas is rotating. Because the gravitational force pulls the gas particles together, the cloud shrinks, an
Fynjy0 [20]

Answer:

Greater than

Explanation:

Here, angular momentum is conserved.

l_1\omega_1 =l_2\omega_2

When the cloud shrinks under the right conditions, a star may be formed.

Thus, Diameter of clouds are much higher than a star.

Moment of inertia of cloud is greater than the star's inertial.

so, angular velocity of the star would be greater than angular velocity of the rotating gas.

3 0
3 years ago
Read 2 more answers
A piece of nickel at 25 °C is dropped into a glass of water at 25 °C. Which statement is correct?
Makovka662 [10]
The answer is C the temp of water in both beakers will decrease since the metal is flowing heat into the water. Therefore we can say the metal losses heat and the water gains the heat lost by the metal minus any heat loss to surroundings! Hope this explanation helps you understand the concept! Please rate if I helped you! Thank you so much!
5 0
3 years ago
The Hubble telescope’s orbit is 5.6 × 105 meters above Earth’s surface. The telescope has a mass of 1.1 × 104 kilograms. Earth e
djverab [1.8K]
The gravitational field is the Force divided by the mass

Call g the gravitational fiel, F the force exerted by the earth and m the mass of the telescope.

g = F / m


g=9.1x10^4 N / 1.1 x 10^4 kg = 8.27 N/kg

Note that the unit N/kg is equivalent to m/s^2

 
8 0
3 years ago
The amount of diffraction that a sound wave undergoes depends on
BigorU [14]
The amount of diffraction of sound waves depends on the medium the sound wave travels to and the frequency. Diffraction happens as soon as it has been out of the source.
5 0
3 years ago
Other questions:
  • Every 30,000 miles, __________. replace the brakes vacuum the interior service the automatic transmission (if your car has one)
    8·2 answers
  • What happens to the pressure in a tire if air is slowly leaking out of the tire? explain your answer?
    5·1 answer
  • A trombone has a variable length. When a musician blows into the mouthpiece and causes air in the tube of the horn to vibrate, t
    11·1 answer
  • A cup falls off of a table from a height of 0.75 m. What is the impact speed of the cup?
    5·2 answers
  • I have been given this question
    9·1 answer
  • Two objects of masses m1 and m2, with m1 < m2, have equal kinetic energy. How do the magnitudes of their momenta compare
    9·1 answer
  • 25 POINTS please help!
    6·2 answers
  • A block weighing 30kg is moved at a constant speed over a horizontal surface by a force of 100 N applied parallel
    15·1 answer
  • If a big person and a small person run up the stairs at the same time who has more force
    15·2 answers
  • Brainlist nd 20 points
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!