To hold the screw in place to stop it dropping
Very close to the tip of the screwdriver. The lip of the tin that the screwdriver presses down against is the fulcrum. The load is the tin lid, under the lip of which the tip of the screwdriver sits.
Medium size flat tip screwdiver and a large hammer
A Weakly magnetised nail will pick up less paper clips then a highly magnetised nail, Hope That Helps:)
ferro magnetic substances can be magnetised. but it is not necessary that all the Ferro magnetic substances can be permanently magnetised. it depends on the alignment of domains in the substance.for example wrought iron can be magnetised permanently but soft iron can only be magnetised temporarily(Electro Magnets).
The strong magnetised nail will pick up more paper clips than the weak magnetised nail.That is because the strong magnetised nail is getting more strength and that means that the weak magnetised nail is getting less strength.in a steel nail there are these things called domains, in a weakly magnetised nail some of them will be pointing north, south, east and west, but however in a strongly magnetised nail all the domains will point to north.
You can put a magnet near the metal. If it gets attracted or repelled, then it is magnetised
No.
Diamagnetic substances are not magnetised. Example: water is a diamagnetic substance, so it cannot be magnetised by any means.
what is the diffrence between a magnetised nail and a unmagnetised nail
Mine is 5 mm
There are 3 syllables in screwdriver:screw/dri/ver
Not usually, but it can be magnetised. (=