because door magnets are stronger than metal thumbtacks
there are 50 types of materials
Choosing MaterialsWhen choosing materials involves weighing advantages and disadvantages of the different materials ( higher quality, stronger materials are usually more expensive)
Materials that do not conduct electricity are an insulator.
Ferromagnetic materials are materials that can easily be magnetized. The most popular and natural materials that exhibit that property include; nickel, cobalt, iron and their alloys.
Johann Kirsten invented the thumbtacks in 1903.
All thumbtacks in professional wrestling are real....
by electro megnatic induction
Yes
If you swallow one of those thumbtacks, it could cause serious physical injury.
Neither, thumbtacks work by van der Waals interactions between molecules which are not chemically bonded together.
To pin things up.
Thumbtacks are believed to be recyclable
Yes
because door magnets are stronger than metal thumbtacks
Drawing Pin
Thesaurus Thumbtacks Tape Thermometer Table Textbook