Centimetres and/or millimetres - depending on the size of the piece !
It should be 400 mm.
A standard tube of toothpaste is typically around 15 centimeters long, which is equivalent to 150 millimeters. The conversion from centimeters to millimeters is achieved by multiplying the length in centimeters by 10, since there are 10 millimeters in 1 centimeter. Therefore, a 15-centimeter tube of toothpaste would be 150 millimeters long.
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1 meter is greater than 200 millimeters. There are 1000 millimeters in a meter.
The long piece of chalk might measure 8 units and 3 units if it is made up of two shorter pieces attached together. Each piece could be 4 units and 3 units long respectively.
Chalk is "de la craie" when you are considering the rock. A piece of chalk is "une craie" (fem.) The expressions: - Not by a long chalk = Loin s'en faut - By a long chalk = De loin
Leverage. With a long piece of chalk you have more to grasp, enabling you to bend it until it snaps.
it would be either 905 mm or 9.5 cm * * * * * I am no expert on chalks but I would be greatly surprised if any piece of chalk was 905 mm (nearly 36 inches) long.
Centimetres and/or millimetres - depending on the size of the piece !
A piece of chalk is an insulator. It does not conduct electricity due to its high resistance to the flow of electrical current.
Crushing a piece of chalk breaks it down into smaller particles, typically creating a powdery substance.
Crushing a piece of chalk is only a physical change. Chemically, it is still chalk.
You can demonstrate that a piece of chalk has mass by weighing it on a scale. Place the chalk on the scale and observe the reading, which indicates the gravitational force acting on the chalk due to its mass. A non-zero reading confirms that the chalk has mass.
With every stroke of the chalk piece it leaves some of the chalk on the board. This abrasion of the piece of chalk causes it to wear down. This is similar to why the rubber tyres of cars wear down when they are driven over a road surface.
When a piece of chalk is broken into pieces, there is a physical change as the chalk is simply being divided into smaller fragments. The chemical composition of the chalk remains the same even though it is now in multiple pieces.
A chalkboard is a piece of slate on which to write with chalk and is named after the color "black".