A cuboid container, 2 mm in length and 2 mm in width, was filled with 5 L water, and then an apple was put into the water, At this time, the water depth in the container is 13 cm. What's the volume of this apple? (fast,)

A cuboid container, 2 mm in length and 2 mm in width, was filled with 5 L water, and then an apple was put into the water, At this time, the water depth in the container is 13 cm. What's the volume of this apple? (fast,)


There is obviously something wrong with the calculation
5L = 5 cubic decimeter
The known floor area is 4 square decimeters
So when the original water level is high, 5 / 4 = 1.25 (decimeter)
13cm=1.3dm
So the apple raised the water level by 0.05dm
therefore
V = 4 (bottom area) * 0.05 (height) = 0.2 (cubic decimeter) = 200 (cubic centimeter) = 0.0002 (cubic meter)



A rectangular glass container, measuring 2 mm in length and width, pour 5.5 l of water into the container, and then put an apple into the water
the sooner the better!


Ljy2055826, just answered a question for others, I don't know if your question is the same, I'll do it first, if not, please ask! A cuboid glass, measuring the length and width from the inside is 2 mm, pour 5.5 L water into the container, and then put an apple into the water. At this time, the water depth in the container is 15 cm



A cuboid glass container, measuring 2 mm in length and width from inside, pour 5.5 L water into the container, and then put a cube iron block into the water
At this time, the water depth in the container is 15cm. What is the volume of the cube iron?


A cuboid glass container, measuring 2 mm in length and width, pour 5.5 L water into the container, and then put a cube iron into the water. At this time, the water depth in the container is 15 cm. What is the volume of the cube iron?
15 cm = 1.5 decimeter
2×2×1.5-5.5
=6-5.5
=0.5 L
=500 cm3



What do the 26 letters mean?
For example: K is to fight, n is to fight many times, a is to deal with······


In ancient Egypt, "A" refers to the picture of "ox head", "B" refers to the picture of "home" or "yard", "C" and "g" refers to the picture of "ruler", "d" refers to the picture of "door leaf", "e" refers to the picture of "person who raises his hands to shout", "F", "V", "Y" refers to the picture of "stick" or "stick"; "H" is a picture of "a section of hemp silk roll"; "I" is a picture of "unfolded hand"; "K" is a picture of "palm"; "m" is a picture of "water"; "n" is a picture of "snake"; "O" is a picture of "eyes"; "P" is a picture of "mouth"; "Q" is a picture of "rope loop"; and "H" is a picture of "a section of hemp silk roll"; "R" is the picture of "human head", "s" and "X" are the pictures of "hills" or "fish", "t" is the picture of "vertical cross", "Z" is the picture of "pry" or "arrow". In the 2nd century BC, Latin alphabet already included these 23 initials. Later, for the convenience of carving and handwriting, In order to distinguish the vowel "V" from the consonant "V", we changed the lower part of the original "V" into a circle and named it as the vowel "U"; then we connected the two "V" to form a consonant "W", which was the beginning of the 11th century. Later, people changed "I" slightly and created a consonant letter "J", The original 23 letters, together with the three letters "U", "W" and "J", constitute a 26 letter alphabet. In the middle ages, the Latin alphabet was basically shaped, and later Western characters (including English) evolved from it



X-x-1: 1 = 1, 1-x: 1-2 = 1-x & # 178; x-4: 7 - X-2: 5 = 0, x + 1: 5x - x + 6: x = 4


1. X = 1 x (x-1) = X-1 (x-1) ^ 2 = 0 x = 1, x = 1 is increasing root, the original equation has no solution. 2, 1-x 1-2 = 1-x & # 178; 3x-x & # 178; (1 + x) - 2 (1-x ^ 2) = 3x-x ^ 23x ^ 2-2x-1 = 0 (3x + 1) (x-1) = 0 x = - 1 / 3, X2 = 1 (increasing root) 3, 7-x-2 / 5 = 0 7 (X-2



Given that the origin is the highest point of the parabola y = (M + 1) X2, then the range of M is ()
A. m<-1B. m<1C. m>-1D. m>-2


∵ the origin is the highest point of the parabola y = (M + 1) X2, ∵ m + 1 < 0, that is, m < - 1



Practical questions
If car a runs 180 kilometers less per minute, car B runs 230 kilometers more per minute and meets each other in 7 minutes, how many kilometers is the distance between a and B?


Now the speed is 230-180 km higher than before,
So now there's a total of 7x50 = 350 kilometers in 7 minutes,
Now it's 8-7 minutes less than before,
So the original speed sum is 350 △ 1 = 350 minutes,
So the distance between a and B is 350 x 8 = 2800 km



The distance between the point m and the point F (4,0) is 1 less than the distance from the point m to the line L: x + 5 = 0
Why let the focus be f and the guide line be x + 4 = 0 instead of (5.0) and the guide line be x + 5 = 0?


Because the distance to (4,0) is not a constant difference from the distance to (5,0)
But the difference between the distance to x = - 4 and the distance to x = - 5 is a constant
The distance between point m and point F (4,0) is 1 less than the distance from it to the line L: x + 5 = 0
That is, the distance between point m and point F (4,0) is equal to the distance from it to the line L: x + 4 = 0
The trajectory is a parabola, and the equation y & # 178; = 16x



The equation (3x + 2) ^ 2 + (X-5) - (3x + 2) (X-5) = 49 is transformed into a general form
(3x + 2) + (X-5) - (3x + 2) (X-5) = 499x + 12x + 4 + (X-5) (1-3x-2) = 499x + 12x + 4 + (X-5) (- 1-3x) = 499x + 12x + 4-x-3x + 5 + 15x = 496x + 26x + 9 = 496x + 26x-40 = 0, each item is divided by 23x + 13x-20 = 0 (point out its quadratic coefficient, primary coefficient and constant term)


Its coefficient of quadratic term: 3, coefficient of primary term: 13, constant term: - 20
Thank you!



China ranks first in terms of land area and population in the world
With the increasing population of the world, China will no longer be the most populous country


India's current statistics is 1.21 billion, China's official data is 1.36 billion or 400 million, which is estimated to be the problem in 15 years, but the imbalance between men and women in India is more serious
At present, the consensus is that our population is the first in the world and our land area is the third in the world