There is a cuboid glass tank with a bottom of 2 square decimeters. It contains 16 cm high water, which just accounts for 80% of the capacity of the glass fiber reinforced plastic. If it is filled with water, the glass tank will be empty How many liters of water can be added to the glass jar?

16cm=1.6dm
2x1.6 / (1-80%) = 16 liters

A rectangular glass fiber reinforced plastic, 8 decimeters long, 6 decimeters wide, 4 decimeters high, 2.8 decimeters deep. If you put a square iron block with the edge length of 4 decimeters, you can get a vat

Volume of iron block = 4 * 4 * 4 = 64 cubic decimeter
Then the bottom area of FRP = 8 * 6 = 48 square decimeters
Then the water surface rises 64 / 48 = 4 / 3 decimeters ≈ 1.33 decimeters
Because 2.8 + 1.3 = 4.1 > 4
Then the water has overflowed
Overflow 4.1-4 = 0.1 decimeter
1 * 8 * 6 = 4.8L

A rectangular glass fiber reinforced plastic, measuring 0.4 meters long and 0.2 meters wide from the inside, now pour 8 liters of water into the tank, how many decimeters deep is it?

Volume = length * width * height 0.4 m = 4 decimeters 0.2 M = 2 decimeters
1 liter = 1 cubic decimeter
8 = 4 * 2 * high
Height = 1 decimeter

What is the density of steel in kilogram per cubic meter?

7.85g/mm3,7.85kg/cm3
The answer you want is 7850000kg / m3
In fact, as long as you remember 7.85, units can be converted

Is 3-x / 4 a binomial or a polynomial?

A polynomial, which has a term of degree zero and a term of degree one

What do you think of the upper and lower sides when calculating the surface integral of coordinates?
What does it have to do with surface normal vector?
I can't read very well
tempusertemp
If the topic does not give the normal direction of the surface, how to judge?
A question I saw:
Z with surface x ^ 2 + y ^ 2 + Z ^ 2 = a ^ 2

A memory method: imagine you have a cube in front of you. The top, front and right side you see are "positive". The rest are negative. The actual meaning is: the normal vectors of the three surfaces are the positive directions of the three axes. In practical application, you will compare the normal direction of the surface you want to judge with the normal vectors of the three surfaces

The rate of advance between volume and volume unit is 1000______ ．

According to the analysis, the ratio between volume and volume unit is 1000, which is wrong

Simplify (a-b-2c) (a + B + 2C) =?

In the plane rectangular coordinate system xoy, there is a certain point a (2,1). If the vertical bisector of the line OA passes through the focus of the parabola y2 = 2px (P > 0), then the Quasilinear equation of the parabola is______ ．

According to the meaning of the question, we can easily get the equation of the straight line as 4x + 2y-5 = 0. Substituting the focal coordinate (P2, 0) into the focal parameter p = 52, we can get the Quasilinear equation x = - 54. So the answer is: x = - 54

The instrument for measuring force is called. The unit used is

When you go to the market to buy vegetables, you often see an old lady holding a long thing with a handle on it, a scale in the middle and a hook on the bottom. This can measure simple and light things
The big ones are weighed by pumps
Newton also discussed 9.8N = 1kg of kilogram

There is a cuboid glass tank with a bottom of 2 square decimeters. It contains 16 cm high water, which just accounts for 80% of the capacity of the glass fiber reinforced plastic. If it is filled with water, the glass tank will be empty How many liters of water can be added to the glass jar?