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Sourabh A.
Studying Engineering at BITS Pilani
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Chemistry
TutorMe
Question:

What is coagulation and how does it work in solutions?

Sourabh A.
Answer:

Coagulation is the process (usually in colloids) in which oppositely charged ions (relative to the charge present in the solution) combine with the charges present in the solution to form a heavy cluster of particles resulting in the settling of the particles in the solution.

Calculus
TutorMe
Question:

If a function is continuous at x=a, what can you comment about its derivative at x=a?

Sourabh A.
Answer:

If a function is continuous at x=a, we cannot comment on its derivative at x=a as the information provided is insufficient. But if the derivative of the function exists at x=a, then we can surely say that the function is continuous at x=a.

Physics
TutorMe
Question:

If the resultant torque of all the forces acting on a body is zero about a point, is it necessary that it will be zero at any other point as well?

Sourabh A.
Answer:

Yes, the resultant torque of all forces about any other point will also be zero. All the pseudo forces have to be taken into consideration as well. Torque is a function of the distance of Forces from the point of consideration and the Forces (All including pseudo-forces) being applied to the body.

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