The number refers to the "hardness" of the pencil's lead.
A little more in depth.The number two refers to the hardness of the graphite core and thus the darkness of the line produced.The #2 has become the standard for all those "colour the square tests" marked by computer scanner. The #2 was chosen because they are the cheapest.
They are the cheapest because they are the most common pencils used in schools.
And yes that is a circular cause and effect.
No. The number designation refers to the hardness of the graphite core and not to the material the pencil is made of.
I don't think you have enough information to answer that question.
Total number = 10*n.
3 pencils to each calculator
usually, no. in America #2 pencils are often required
Thomas Jefferson
Yes, there is no rules written that you can't use mechanical pencils for school. However, it's better to get number 2 HB pencils because it's easier to erase.
on normal pencils its HB which stands for hard black and the 'b' on other pencils stands for black and the higher the number is on the pencil the less amount of clay is in the pencil which means that pencil mark is a darker and softer
No, number 2 pencils are not safe for eyebrows. The graphite in the pencil can irritate the skin and may contain chemicals that are not meant for cosmetic use. For eyebrow grooming, it's best to use products specifically designed for that purpose, such as eyebrow pencils or powders that are formulated for safe use on the skin.
No. The number designation refers to the hardness of the graphite core and not to the material the pencil is made of.
To calculate the number of trees used to make 2 billion pencils, we need to consider that on average, one tree can produce about 170,000 pencils. Therefore, to make 2 billion pencils, we would need approximately 11,765 trees (2,000,000,000 pencils / 170,000 pencils per tree). This calculation assumes standard industry practices and may vary depending on the type and size of trees used in pencil production.
The number of pencils in 1.00 moles of pencils can be calculated using Avogadro's number which is approximately 6.022 x 10^23. So, in 1.00 moles of pencils, there would be approximately 6.022 x 10^23 pencils.
I don't think you have enough information to answer that question.
Total number = 10*n.
Because it can't print fast enough to beat number 1. The #2 pencils are so labeled because their darkness and hardness approximates those of a US classification (previously French and British) of graphite pencil leads. They are hard enough to resist breakage and soft enough to make a clear mark. Generally the harder a pencil is, the sharper the point can be, and hard pencils usually make dim marks. You can buy #1 pencils (softer and darker) and #3 pencils (harder and not as dark), and even #2.5 which indicates you are getting a slightly harder, less distinct graphite. Colored pencils tend to be softer and drawing pencils tend to be harder. (see the related link for more)
The mass of 2 pencils is typically very light, around 10 grams total.
ABOUT 100,000,000 (one hundred million) pencils are made in the united states every year. would you like to find out how many pencils are made per second? use a calculator. divide the number by 365 and divide that number by 24, then divide that by 60, and then divide it by sixty again. that number will be the estimated number of pencils per minute. the answer could be a fraction, because I don't know I've never done it. Acually if you do that equation I believe it gives you the number of pencils made every second.