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SOVA2 [1]
2 years ago
15

The air pressure on the bottom of an airplane’s two wings is greater than the pressure on the top, providing an upward lift. Cal

culate the surface area of one wing required to lift a plane weighing 4.00 x 105 N if the pressure difference is 0.100 atm.
Physics
1 answer:
dangina [55]2 years ago
5 0

P=F/A

A=F/P

P = 0.1 atm = 10132.5 Pa

A=4 x 10⁵/10132.5

A=39.477 m²

for one wing=39.477 : 2 = 19.739 m²

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Which best describes a chain reaction associated with a nuclear reaction?
Free_Kalibri [48]
The correct answer for the question that is being presented above is this one: "A) self-sustaining." The term that <span>best describes a chain reaction associated with a nuclear reaction is self-sustaining.</span>
Here are the following choices:
<span>A) self-sustaining
B) weak
C) non-explosive</span>

5 0
3 years ago
A beam of protons is directed in a straight line along the positive zz ‑direction through a region of space in which there are c
Zinaida [17]

Answer:

The magnitude is B = \frac{450}{7.9* 10^5}

The direction is  the positive x axis

Explanation:

From the question we are told that

   The  electric field is  E = 450 V/m in the negative y ‑direction

   The speed of the proton is  v= 7.9* 10^5\  m/s in the positive z direction

Generally the overall force acting on  the proton is mathematical represented as

              F_E =  q(\vec E + \vec v  * \vec B)

Now for the beam of protons to continue un-deflected along its straight-line trajectory then  F_E =0

So

          0  =  q( E (-y) + v(z)  * \vec B)

=>      E\^y = v \^ z  * \vec B

Generally from unit vector cross product vector multiplication

         \^ z  \ *  \  \^ x  =  \^  y

So the direction of  B (magnetic field must be in the positive x -axis )

So

       E\^y = v \^ z  *  B\^ x

=>     E\^y = vB ( \^ z  *  \^ x)

=>     E\^y = vB ( \^y)        

=>      E = vB  

=>      B = \frac{450}{7.9* 10^5}

=>      B =  0.0005696 \ T  

   

   

6 0
4 years ago
PLEASE HELP
Mnenie [13.5K]
Velocity= 1/4 = 0.25 m/s towards the ball
7 0
3 years ago
A bike moves 60 meters in 12 second. calculate the speed of the bike
nikdorinn [45]

Answer:

Speed=<u>Distance</u><u> </u>

Time

=<u>60</u>

12

=5m/s

4 0
3 years ago
Three identical very dense masses of 7500 kg each are placed on the x axis. One mass is at x1 = -100 cm , one is at the origin,
sukhopar [10]

Answer:

0.00354 (N)

Explanation:

Convert to metric system:

x_1 = -100 cm = 1 m

x_2 = 420 cm = 4.2 m

Formula for gravitational force:

F_g = G\frac{mM}{s^2}

where s is the distance between 2 bodies masses m and M

Substitute the number to the formula above and since the 2 forces are acting in opposite direction, the total net gravitational force on the mass of origin be:

F_g = F_{g1} - F_{g2}

F_g = G\frac{m_1M}{x_1^2} - G\frac{m_2M}{x_2^2}

F_g = GM(\frac{m_1}{x_1^2} - \frac{m_2}{x_2^2})

F_g = 6.67*10^{-11} * 7500 (\frac{7500}{1^2} - \frac{7500}{4.2^2})

F_g = 5*10^{-7}(7500 - 425.17)

F_g = 5*10^{-7} * 7074.83

F_g = 0.00354 (N)

5 0
3 years ago
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