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Tutor profile: Mariya R.

Inactive
Mariya R.
Aerospace Engineer; tutoring from past 3 years
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Questions

Subject: Mechanical Engineering

TutorMe
Question:

What are the factors that can affect the Factor of safety selection?

Inactive
Mariya R.
Answer:

The factor of safety is used in designing a machine component. Prior to selecting the correct factor of safety certain points must be taken into consideration such as: > The properties of the material used for the machine and the changes in its intrinsic properties over the time period of service. > The accuracy and authenticity of test results to the actual machine parts. > The applied load reliability. > The limit of stresses (localized). > The loss of property and life in case of failures. > The limit of initial stresses at the time period of manufacture. > The extent to which the assumptions can be simplified. The factor of safety also depends on numerous other considerations such as the material, the method of manufacturing , the various types of stress, the part shapes etc.

Subject: Algebra

TutorMe
Question:

What is the distance between (-4,-5) and (-1.-1)

Inactive
Mariya R.
Answer:

The distance d between points (-4 , -5) and (-1 , -1) is given by d = sqrt[ (-1 - -4) 2 + (-1 - -5) 2 ] Simplify. d = sqrt(9 + 16) = 5

Subject: Physics

TutorMe
Question:

How does a gyroscope work?

Inactive
Mariya R.
Answer:

It's nothing but the conservation of angular momentum. Let me tell you how: A gyroscope is a spinning wheel or disc in which the axis of rotation is free to assume any orientation by itself. When rotating, the orientation of this axis is unaffected by tilting or rotation of the mounting, according to the conservation of angular momentum. Because of this, gyroscopes are useful for measuring or maintaining orientation.

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