Physics: how to convert kilogram to cow? Formula of work?

G=mg
G gravity m mass g acceleration of gravity (g = 9.8m/s or 9.8n/kg)
Work done by gravity e = MGH (H = height)

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2. Some units of cosmetics are milliliter and some are gram. How to convert milliliter into gram?
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12. A 62.8-meter-long iron wire was used to wind a cylindrical steel column for 10 circles. How many cubic meters is the volume of the 5-meter-long steel column?
13. On the 4m long cylindrical steel column, a 31.4 decimeter long iron wire is used to circle 10 times along the iron column. How many square decimeters is the volume of the iron column?
14. A 12 decimeter long iron wire is used to form a frame in the shape of the largest cube. The volume of the cube is______ Cubic decimeter
15. A 24 decimeter long wire is used to form the largest cube frame. The volume of the cube is () cubic decimeters
16. On a four meter long cylindrical steel column, a 31.4-decimeter-long iron wire is used to circle the steel column for 10 times. What is the volume of the steel column? The best time is 15 minutes
17. A cuboid square steel, 3 meters long, cross-section is 5 cm square, if each cubic decimeter of steel 7.8 kg
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