How to demagnetize the screwdriver, Physics

Assignment Help:

Q. Jingdan turned a screwdriver into a magnet by rubbing it with a strong bar magnet to pick up a screw that has fallen into an inaccessible spot.

How could he demagnetize his screwdriver after picking up the screw?

 

He could drop it, heat it, hit it with a hammer, or somehow otherwise jiggle the magnetic domains into randomness.


Related Discussions:- How to demagnetize the screwdriver

Calculate its efficiency as a percentage, A 100 hp car engine operates ata ...

A 100 hp car engine operates ata bout 15 percent efficiency. Assume the engine's water temperature of 85°C is it scold-temperature (exhaust) reservoir and 500°C is its thermal "int

Determine the evaporation rate, An industrial process involves the evaporat...

An industrial process involves the evaporation of water from a liquid film that forms on a contoured surface. Dry air is passed over the surface, and from laboratory measurements t

Motion on inclined plane, a body is thrown horizontally with a velocity of ...

a body is thrown horizontally with a velocity of u from the top of a tower. the displacement of the stone when the horizontal and vertical velocities are equal is

Periodic motion, why phase is defined only for periodic motion ?

why phase is defined only for periodic motion ?

What is the dimentional formula of latent heat?, Hf = mLf m - (g/lbs) *1lb...

Hf = mLf m - (g/lbs) *1lb = 454g Lf - latent heat of fusion - 80 kcal/kg fr water Hope

Explain electromotive force, Electromotive Force: (emf) A force which d...

Electromotive Force: (emf) A force which derives the electric current is known as electromotive force. OR The energy needed to drive the charge around the circuit is know

What current would be needed to produce the flux, a) A uniform mild steel r...

a) A uniform mild steel ring has a diameter of 50mm and a cross-sectional area of 1cm 2 . Determine the mmf essential to produce a flux of 50µWb in the ring. (b) I

Define the unit of self inductance, Q. Define the unit of self inductance. ...

Q. Define the unit of self inductance. One henry is described as the self-inductance of a coil in which a change in current of one ampere per second produces an opposing emf of

Postulates of special theory of relativity, Postulates of Special Theory of...

Postulates of Special Theory of Relativity - 1. All law of physics having same form in all inertial frame of reference. 2. The speed of light in free space is constant, irres

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd