For model 5, the tip of the blade travels 0.18 mile per revolution. What is the approximate speed, in revolutions per minute,for
model 5?
2 answers:
Answer:
approximate speed would be 19 revolutions per minute.
Step-by-step explanation:
For model 5, blade length = 148 feet
Maximum blade tip speed = 200 miles per hour
tip of the blade travels per revolution = 0.18 mile
Number of revolutions per hour = = 1,111
To get speed per minute, divide by 1 minute ( 60 seconds ).
= 18.51 ≈ 19 revolutions per minute.
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Answer:
a)
b)
c) the points of the form (x, -x) for x≠0
Step-by-step explanation:
a)
If φ(x, y) = arctan (y/x), the vector field F = ∇φ would be
On one hand we have,
On the other hand,
So
b)
The domain of definition of F is
i.e., all the plane X-Y except the (0,0)
c)
Here we want to find all the points such that
where k is a real number other than 0.
But this means
So, all the points in the line y = -x except (0,0) are parallel to the vector field F, that is, the points (x, -x) with x≠ 0