A blacksmith hammers a hot piece of iron while making a tool . How does the force due to hammers affect the piece of irohn?

A blacksmith hammers a hot piece of iron while making a tool.How does the force due to hammering affect the piece of iron ?

How can a magnetised piece of iron be demagnetised?

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : The energy of a charged particle does not change, when it moves inside the magnetic field. Reason: It is because, force on the charged particle due to the magnetic field acts perpendicular to its path.

A shell fired from a gun explodes into pieces in air .How is the centre of mass of the shell affected?