We should eat healthy food

Write 5 healthy poems and 5 unhealthy food words in English

Health food: fish, potato, tomato, cabbage, apple, corn
Non health: chips, fried chicken, cola, ice cream, can

One vertex of an equilateral triangle is at the focal point of the parabola y ^ 2 = 2px (P > 0), and the other two vertices are on the parabola
Chord length formula: | ab | = √ (1 + K ^ 2) * | x1-x2|
K is the slope
|x1-x2|= √[(x1+x2)^2-4*x1x2]

X = (7 + 4 √ 3) P and (7-4 √ 3) P
The distance from a point a (x, y) to the focus f is x + P / 2
The distance from a (x, y) to B (x, - y) is 2Y
So y from x + P / 2 = 2Y is taken into the parabolic equation and the value of X is as above

What is the difference between 95% alcohol and 75% alcohol

There are usually two specifications of medical alcohol sold in pharmacies, 95% and 75%, but their uses are different. 95% alcohol is often used to wipe the ultraviolet lamp, and 75% alcohol is used for disinfection. In addition, 40% - 50% alcohol can prevent bedsore, and 25% - 50% alcohol can be used for physical antipyretic

After decomposing prime factors of two numbers 50 and 70, it is found that -------- is their common prime factor

1,2,5

If an original function of F (x) is the square of the x power of E, we can find the upper line 1 and the lower line 0 XF '(x) DX of the definite integral

∫ online 1 offline 0 XF '(x) DX = f (1) - f (0) = 2 (e ^ 1) ^ 2-2 (e ^ 0) ^ 2 = 2 (e ^ 2-1)

There is a piece of pure metal handicraft with a mass of 100 grams and a volume of 6 cubic centimeters to judge whether it is pure gold or not

Its density = mass △ volume
=100÷6
=16.7 (g / cm3)
The density of gold is 19.3 (g / cm3), so it is not pure gold

If a is the opposite of - (- 5), B is 4 times larger than the smallest positive integer, and C is the largest negative integer, the sum of 3A + 2b-c is calculated

-The opposite of (- 5) = 5, - 5 is - 5, a = - 5
The smallest positive integer is 1, B = 1 + 4 = 5
The largest negative integer is - 1, C = - 1
3a+2b-c
=3×(-5)+2×5-(-1)
=-15+10+1
=-15+11
=-4

The tangent plane equation of surface x ^ 2 + y ^ 2 + Z = 9 at point (1,2,4) is?

Let f (x, y, z) = x ^ 2 + y ^ 2 + Z-9, then f'x = 2x, f'y = 2Y, f'z = 1,
Then the normal vector of the section of the surface at points (1,2,4) is (f'x, f'y, f'z) = (2,4,1),
So the section equation is 2 (x-1) + 4 (Y-2) + (Z-4) = 0,
It is reduced to 2x + 4Y + z-14 = 0

What are the practical examples of junior high school physics equivalent substitution method?

In physics, one or more physical quantities, a physical device, a physical state or process are replaced to get the same conclusion. This method is called equivalent (substitution) method. By using this method, the problems to be studied can be simplified and visualized

We should eat healthy food