its not, in less you are doing folds, with maybe a box with duck tape. other wise it is like 5-15 pounds depending on thickness and weight distributions, not to much in one point!
No its not
1100 ltr cardboard = 70kg = 0.07 tonnes
I believe cardboard is a conductor, and cardboard is not that thick to block the magnetic energy.
If you slowly move the cardboard the coin on top will move with the cardboard. Law of Inertia. There is not enough force to drop the coin into the water.
Use some standard of cardboard wt. per square ft, as a box has six sides, you have (length x width + length x height + width x height) x 2 x lb/ sq ft or if in metric kg/ sq m. Get net weight by subtracting cardboard wt from box wt. One standard cardboard box wt. in US is 0.13 kg/ sq m. This number will vary in US and, may be quite different in other countries.
You would call strong cardboard 'cardboard'. It doesn't matter how strong it is, the cardboard is still cardboard. Even if the cardboard is extremely stiff, it is still cardboard, and there is no special name for it.
Oaktag
roflboard
Pressed cardboard is called corrugated cardboard. It is lightweight, very strong and durable, and is used to package and store many products.
Cardboard, metal,wood and other strong materials
It is flexible, strong, ceap, recylable and easy to get hold of. It is flexible, strong, ceap, recylable and easy to get hold of.
Plastic is made from oil and cardboard is made from paper. Oil goes through a series of chemical changes to be formed into various types of plastic. Cardboard is made from the pulping of wood chips into a strong paper. This paper is then layered, crimped, and glued.
cardboard, pasteboard, cartoon, painting or drawing on strong paper
get a cardboard box tape it up and buy some strong card. make arms, legs and head shape out of the strong card, then tape the shapes to the cardboard box and draw a face on the head and buttons on the body. your done.you have yourself a kids robot =]
Plastic is made from oil and cardboard is made from paper. Oil goes through a series of chemical changes to be formed into various types of plastic. Cardboard is made from the pulping of wood chips into a strong paper. This paper is then layered, crimped, and glued.
cardboard boxes are used worldwide because cardboard has strong properties to save things while shipping. cardboard material is recyclable and cost-effective. HalfPricePackaging is offering custom cardboard boxes at less cost and you can customize your boxes like you can print your logo on the boxes so people know about your brand
The positive properties of cardboard are:CheapEasy to get hold ofLiteSoftThe negative properties are:Highly FlammableVery vulnerable to water. It breaks it away easilyNot a very strong structure (can be crushed very easily)