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Tutor profile: Balram R.

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Balram R.
Freelance Theoretical Physicist
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BioQuestions

Questions

Subject: Physics (Newtonian Mechanics)

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Question:

Can a point particle be observed to be accelerating even when there is no force acting on it?

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Balram R.
Answer:

If the observer's frame of reference is not an inertial frame, even a free particle (i.e. no force acting on the particle) may be seen to be accelerating.

Subject: Physics (Electricity and Magnetism)

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Question:

If we have a static distribution of electric charges contained within a spatial region of finite size, is it possible to estimate the total electric charge in that region by only measuring the electric field at a point that is very far from the core of the system?

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Balram R.
Answer:

Yes.

Subject: Physics

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Question:

Are there quantities that are conserved, i.e. remain unchanging with time, in any isolated physical system? Give some examples of such quantities.

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Balram R.
Answer:

Every isolated physical system has some conserved quantities. Examples are: (1) Conservation of total Energy. (2) Conservation of total Momentum. (3) Conservation of total Electric Charge.

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