An aircraft is in level flight at airspeed v(t) m/s with thrust
T(t) N at cruising altitude. Suppose that at v0 = 250 m/s, the
aerodynamic drag experienced by the aircraft at this altitude
is:
Fd(v) = 0.25v 2 . (1)
Then, an extremely simplified model relating v(t) to T(t)
is:
mv˙(t) + Fd(v(t)) = T(t), (2)
where m = 25000 kg. Assume v(t) is always positive.
Question 1. Linearize (2) at v0 = 250 m/s, and an appropriate
nominal...
I went to the 99 Cent store the other day and got really excited
at some amazing bargains: The scented candles that normally sold
for $5.99 at Target was at the 99 Cent Store. After grabbing about
a dozen of them and stuffing them into my shopping basket, I
realized they weren’t 99 cents! They were marked as $1.99. I was a
little annoyed and not a little disappointed as I mumbled to
myself, “the audacity of them to keep...
I went to the 99 Cent store the other day and got really excited
at some amazing bargains: The scented candles that normally sold
for $5.99 at Target was at the 99 Cent Store. After grabbing about
a dozen of them and stuffing them into my shopping basket, I
realized they weren’t 99 cents! They were marked as $1.99. I was a
little annoyed and not a little disappointed as I mumbled to
myself, “the audacity of them to keep...
(a) Prove that Sn is generated by the elements in the set {(i
i+1) : 1≤i≤n}.
[Hint: Consider conjugates, for example (2 3) (1 2) (2
3)−1.]
(b) ProvethatSn isgeneratedbythetwoelements(12)and(123...n) for
n ≥ 3.
(c) Prove that H = 〈(1 3), (1 2 3 4)〉 is a proper subgroup of
S4.
I stepped on a track and lifted my foot explain how that
sensation got to my brain. Where I became aware of it and why my
foot lifted before I was aware
Based on the typical structure of a hurricane as discussed in chapter 16, explain why a hurricane reconnaissance aircraft would encounter an overall increase in the amount of cross-wind, varying but overall increasing turbulence, and varying visibility, along a straight-line flight path from the outer edge to the center of a hurricane, flying at 6,000 feet above the ocean surface.