() one half is one () one quarter is one () one eighth is one half inside () one quarter quarter () one eighth Be sure to say it today

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RELATED INFORMATIONS

1. The blood of the human body accounts for 113% of the body weight. The blood is water. Dad's weight is 78 kg. How many kg does his blood contain?
2. The sum of 1 / 4 of a number plus 12 is equal to 2 / 5 of it. Find the number (by solving the equation)
3. If the least common multiple of a and B is 2730, then t=______ ．
4. 5 / 6 △ 3 / 4-2 / 9 + 3 / 4 The calculation is simple
5. There is also a question 1,0,1,8,9, ()?
6. 1,2+3,4+5+6,7+8+9+10…… The general term formula of
7. 1.5 + 3.6 means () 2.8-0.3 means () 1.2 * 5 means () 20 * 3 / 4 means () 100 / 2 / 5 means ()
8. a. B ∈ R, then f (x) = x | SiNx + a | + B is an odd function if and only if () A. a2+b2=0B. ab=0C. ba＝0D. a2-b2=0
9. Jiugong grid: find the rules and fill in the appropriate numbers 9, 11, 10, 16, (), 12, 17, 8 and 5 in the blank number
10. Comparison of static friction and sliding friction
11. A small ball with a mass of 0.1kg is suspended at the top of the inclined plane with an inclination of 37 degrees by a thin wire. The static state of the system is that the rope is parallel to the inclined plane, regardless of all friction, and the system accelerates. When the accelerations are 5 m / s, 10 m / s and 24 m / s, what are the pulling forces on the rope? Specific answer process
12. A cup placed on a horizontal table has a mass of 0.2kg and a volume of 5 × 10 ∧ - 4 m #. Now fill the cup with water to find: (1) the mass of water in the cup; (2) the pressure of the cup on the table. (G is 10N / kg)
13. Fill the cup with water and put a small wooden block into the cup. The small wooden block floats on the surface of the water. After putting the wooden block, the pressure of the container on the table will not change
14. Pour 200g water into the cup, the water depth is 20cm, put 40g wood block, the water surface rises 4cm, ask the pressure of water on the bottom of the cup? The pressure of the bottom of the cup on the table?
15. As shown in the figure, regardless of the mass of the plastic cup placed on the horizontal table, pour 200g water into the cup with a water depth of 20cm; then gently put 40g wood block into the cup, and the wood block floats after it is still, and the water surface rises by 4cm (water does not overflow, g = 10N / kg)? (2) What is the pressure of the bottom of the cup on the horizontal table?
16. As shown in the figure, regardless of the mass of the plastic cup placed on the horizontal table, pour 200g water into the cup with a water depth of 20cm; then gently put 40g wood block into the cup, and the wood block floats after it is still, and the water surface rises by 4cm (water does not overflow, g = 10N / kg)? (2) What is the buoyancy of the block? (3) What is the pressure of the bottom of the cup on the horizontal table?
17. On the horizontal table, pull a 200N wooden block to the right along the horizontal direction with a spring dynamometer at a constant speed, and the indication of the spring dynamometer is 50N 【1】 Try to analyze the force on the block, and the force diagram, and find out the size of the force 【2】 If the indication of the spring dynamometer increases to 60N, what is the friction force on the block? What is the resultant force on the block? What is the motion state of the block?
18. Use a light spring with original length l0 = 15cm to lift a wooden block vertically, and the length of the spring is L1 = 23cm. If the wooden block is pulled horizontally to move uniformly on the horizontal table, the length of the spring is L2 = 17cm. Calculate the dynamic friction coefficient u between the wooden block and the horizontal table. If the mass of the wooden block is m = 8kg, what is the light coefficient K of the spring?
19. The length of a spring without hanging a heavy object is 12cm, and the length of extension after hanging a heavy object is directly proportional to the mass of the suspended object; if a 1kg object is hung, the spring is extended by 2cm; the functional relationship between the total length of the spring y (unit: cm) and the mass x (unit: kg) of the suspended object is obtained
20. The relationship between the length y (CM) and the weight x (kg) of a certain spring with a length of 20cm, a weight of 1kg and an elongation of 0.2cm