Length of wood = 1.2 m
Carlos wants to cut it into 3 equal parts.
So, length of each part = (1.2/3) m = 0.4 m = (0.4×1000) mm = 400 mm
The best way to make an accurate measurement of the height of a polar liquid is to take the reading from the lowest point of the meniscus.
<h3>What is the meniscus of a liquid?</h3>
The meniscus of a liquid is a curved that occurs at the top of a liquid placed in a container as a result of the attractive forces between the molecules of a the liquid.
Polar substances such as water have a concave meniscus as they dip downwards.
Therefore, the best way to make an accurate measurement of the height of a polar liquid is to take the reading from the lowest point of the meniscus.
Learn more about meniscus at: brainly.com/question/10868896
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<span>You can't substitute that. Substitution is a reaction between acid and metal. Acid+metal ---> salt+H2
example : H2SO4+Al ---> Al2(SO4)3+H2 so,substitution of hno3 solution for 3M h2so4 is not possible</span>
This segment is called a gene