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Aleksandr [31]
3 years ago
11

hurry please if you answer this question I'll give you the brainliest the question is does the tail rotor help the helicopters t

o stop spinning or does it help it stop flipping over please pick one or both of them hurry hurry hurry hurry hurry hurry hurry hurry hurry hurry please please please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Mathematics
1 answer:
grandymaker [24]3 years ago
7 0

Answer:

It helps it stop spinning if fails then the helicopter can go in an uncontrollable spin.

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Ima just give all my points away.<br><br> P.S<br> I don't like you brainly.
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Answer:

interesting

Step-by-step explanation:

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Need help with this one
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The spherical balloon is inflated at the rate of 10 m³/sec. Find the rate at which the surface area is increasing when the radiu
rjkz [21]

The balloon has a volume V dependent on its radius r:

V(r)=\dfrac43\pi r^3

Differentiating with respect to time t gives

\dfrac{\mathrm dV}{\mathrm dt}=4\pi r^2\dfrac{\mathrm dr}{\mathrm dt}

If the volume is increasing at a rate of 10 cubic m/s, then at the moment the radius is 3 m, it is increasing at a rate of

10\dfrac{\mathrm m^3}{\mathrm s}=4\pi (3\,\mathrm m)^2\dfrac{\mathrm dr}{\mathrm dt}\implies\dfrac{\mathrm dr}{\mathrm dt}=\dfrac5{18\pi}\dfrac{\rm m}{\rm s}

The surface area of the balloon is

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\dfrac{\mathrm dS}{\mathrm dt}=8\pi r\dfrac{\mathrm dr}{\mathrm dt}

so that at the moment the radius is 3 m, its area is increasing at a rate of

\dfrac{\mathrm dS}{\mathrm dt}=8\pi(3\,\mathrm m)\left(\dfrac5{18\pi}\dfrac{\rm m}{\rm s}\right)=\dfrac{20}3\dfrac{\mathrm m^2}{\rm s}

4 0
3 years ago
The region bounded by y = e−x2, y = 0, x = 0, and x = b (b &gt; 0) is revolved about the y-axis. (Round your answers to three de
kari74 [83]

Answer:

0.982 * \pi  = 3.085 cubic units

Step-by-step explanation:

To find the volume of the solid generated by a region that is bounded by lines where x = 0 , x (b) = 2 we apply the formula given in the attachment below  

the required region boundaries are

y = e^-x2 , y = 0 ,  x = 0,  x = b ( b >0)

attached below is a detailed solution of the problem

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Which number is a factor of 14, but not a multiple of 2?
bonufazy [111]
7 is a factor of 14 and is not a multiple of 2.
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3 years ago
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