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mrsjenrucker
03.08.2019 •
Physics
In which step of the problem solving process should you write a concise statement about the problem? a. analyzing the problem b. selecting and planning the solution c. implementing the solution d. identifying and defining the problem
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Ответ:
Ответ:
Option (D) is the correct answer.
Explanation:
Concise means to write or express much of the information in few words.
When we solve a problem then firstly we define the problem in few words then then identify it using necessary steps in order to reach the conclusion.
Therefore, we can conclude that in the step of identifying and defining the problem we write a concise statement about the problem.
Ответ:
a)106.48 x 10⁵ kg.m²
b)144.97 x 10⁵ kgm² s⁻¹
Explanation:
a)Given
m = 5500 kg
l = 44 m
Moment of inertia of one blade
where m is mass of the blade
l is length of each blade.
Putting all the required values, moment of inertia of one blade will be
Moment of inertia of 3 blades
b) Angular momentum 'L' is given by
L =
x ω
where,
ω=angular velocity =2π f
f is frequency of rotation of blade i.e 13 rpm
f = 13 rpm=>= 13 / 60 revolution per second
ω = 2π f => 2π x 13 / 60 rad / s
L=
x ω =>106.48 x 10⁵ x 2π x 13 / 60
= 144.97 x 10⁵ kgm² s⁻¹