Answer:
dk man
Step-by-step explanation:
<h3>
Answer: 20 sides</h3>
Work Shown:
E = exterior angle = 18 degrees
n = number of sides of a regular polygon
n = 360/E
n = 360/18
n = 20
This is a 20 sided regular polygon. It is considered a regular icosagon.
Answer:
The value of the damping coefficient γ is (6/19)√29, which is approximately 1.70058.
Step-by-step explanation:
Given that a certain vibrating system satisfies the equation
u'' + γu' + u = 0
We wish to find the value of the damping coefficient γ for which the quasi period of the damped motion is 90% greater than the period of the corresponding undamped motion.
The period of the undamped motion T is 2π
The quasi period T_d is (4π)/√(4 - γ²)
Since the quasi period is 90% greater than the period of the undamped motion, we have
T_d = 1.9T
So that we can finally obtain
γ as 1.70058.
THE STEP-BY-STEP WORKING IS SHOWN IN THE ATTACHMENTS.
The answer to this question is 2