Why can't it live on this land or that land with peace of mind?
Could it be that the mother bird living on land here is its affair and the other side is its wife?
Nangong Nuannuan glanced at Nangong Jin, saw that he read it calmly, and after flipping through the paper and correcting all the other places, he returned the test paper to the principal without any facial expression.The teacher, surnamed Zheng, said: "Nanxu's parents, you have also read Nanxu's test papers, I would like to hear what you think." ”Nangong Jin looked at this Teacher Zheng with a strange expression.Teacher Zheng is a middle-aged woman in her 40s, but she was stunned by Nangong Jin's face and blushed."
Why, you don't have anything to say, do you?
Do you think Nanxu is wrong?
If you really think so, I hope you can go back and discipline Nanxu well.At least let him understand what it means to respect teachers and value teaching. ”Nangong Xu said lightly: "This teacher, I can tell from the dispute between you and Nan Xu's homeroom teacher just now that this question was made by you, so you are very dissatisfied with Nan Xu's denial of you."
Nanxu is still young, and there is no way to make an analysis from a scientific theory, so he can only analyze the feasibility of crows drinking water and birds flying across the ocean from the normal situation.But I can tell you a very clear formula for buoyancy.If you want a piece of wood to carry a bird, then one condition needs to be met, that is, - the buoyancy generated by the wood - the gravity of the wood itself + the gravity of the bird.In order to get the most out of the wood, let's assume that the wood happens to be completely stepped below the surface of the water, then it can be concluded that - the density of the water, the volumetric gravitational acceleration of the wood, the density of the wood, the volumetric gravitational acceleration of the wood, the gravitational acceleration of the bird's weight.Combining similar terms and simplifying them yields: the volume of wood (density of water - density of wood - weight of bird).The density of water is about 1,000 kilograms per cubic meter, and the density of wood is between 400 and 750 kilograms per cubic meter.It can be concluded that: the weight of the bird / the volume of wood - 500 kg / cubic meter.In simple terms, this is the conclusion: if the bird is a kilogram, then the volume of wood - 1/500 cubic meter - 0002 cubic meters - 2 cubic decimeters.Teacher: Do you know what the concept of 2 cubic decimeters is?
It's our common bricks, about two.What is the concept of a one-kilogram bird?
A chicken weighs about three or four pounds, and one kilogram weighs a chick.Can a bird the size of a chicken move two brick-sized pieces of wood or an arm-thick stick?
Even if it could, the resistance of the wind to the wood would cause it to roll directly from the ocean to the bottom of the sea.You might say that the bird in your proposition is much bigger than the chick-sized bird.But the bird is big and heavy, and when the time comes, it may not be a branch the thickness of an arm, but as Nanxu said, it will have to carry a pillar to travel.I don't think a bird can move a pillar in its mouth.Teacher, what do you say?
”Headmaster:......
Teacher:......
Teacher: ......!!!
Nangong Nuannuan on the side is a serious book.But inside, she felt like she could laugh into an internal injury.Her brother is probably a straight male terminal cancer patient, right?
Identification done!
Nangong Jin seemed to think that what he said was not enough to anger the teacher, and said-