![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
What is the buoyancy of 2.34 kg steel immersed in water? (steel density 7.8 × 10 kg / M)
Take g = 9.8 = ρ water GV row = 1.0 × 10x9.8x2.34 / 7.8 × 10 = 2.94 n
Rectangular aluminum block with density of 2.7 × 103 kg / m3 and volume of 5 cubic decimeters Second grade buoyancy calculation
A rectangular aluminum block with density of 2.7 × 103kg / m3 and volume of 5 cubic decimeters, when it is immersed in water, the pressure of water on its upper surface is 240n, and the pressure of water on its lower surface is 289n. At this time, how much buoyancy does the aluminum block suffer? What is the indication of the spring scale?
F floating = f up-f down = 289-240 = 49n
F pull + F float = g object
Fra = 2.7 * 5 * 9.8-49 (2.7 * 10 ^ 3kg / m ^ 3 = 2.7kg / DM ^ 3)
=83.3N
The buoyancy of a wood block with a mass of 1kg and a density of 0.4 × 10 ^ 3kg / m ^ 3 when it is still in water is 0
The wood is still in the water and buoyancy is equal to gravity
G=mg=1kg.9.8N/kg=9.8N
A: buoyancy is 9.8N
RELATED INFORMATIONS
- 1. When a solid aluminum ball with a mass of 2.7kg is put into mercury and water respectively, what is the buoyancy of the aluminum ball? (g = 10N / kg)
- 2. What is the buoyancy of a cubic kilogram of wood with a mass of 1kg and a density of 0.4 * 10 I first calculate the volume of the block, and then f = ρ, GV = 24.5n. Why is it wrong?
- 3. A piece of wood with a mass of 10kg and a density of 0.6x10 cubic kilogram per cubic meter is put into the water and the buoyancy is How many cows
- 4. A steel pipe is 80 cm long. The outer diameter of the steel pipe is 8 cm and the inner diameter is 6 cm. How many cubic centimeters is the volume of the steel pipe Cut a cube with an edge length of 6 decimeters into the largest cylinder, and the cut part is () cubic decimeters A cylindrical reservoir can store 40 cubic meters of water. After reconstruction, the height of the reservoir remains unchanged, and the perimeter of the bottom surface is increased by three times. Now the reservoir can store () cubic meters of water
- 5. A steel pipe is 60 cm long, 8 cm in outer diameter and 6 cm in inner diameter. How many cubic centimeters is its volume?
- 6. A steel pipe is 300 cm long with an outer radius of 10 cm and an inner radius of 8 cm. How many kg does this steel pipe weigh? (the weight of steel per cubic centimeter is 7.8G, and the number obtained will be kept to two decimal places)
- 7. A cylindrical steel pipe, the inner diameter is 4, the wall thickness is 2 cm, the length is 2 m, and the weight of each cubic decimeter of steel is 7.8 kg How many kilos does it weigh? (4cm, wrong type) This is the supplementary condition
- 8. A steel pipe is 5 meters long, 20 cm in diameter and 2 cm in wall thickness. If the weight of steel per cubic decimeter is 7.8 kg, how many kg is the weight of this steel pipe Keep integers
- 9. A cylindrical steel pipe, with an inner diameter of 4cm and an outer diameter of 8cm, is 6m long and weighs 7.8G per cubic centimeter. How many kg does this steel weigh?
- 10. The diameter and height of the bottom of a cone are 8 cm. What is its volume
- 11. 3. The aluminum ball with a mass of 270 G is completely immersed in water, and the buoyancy of the ball is calculated? (ρ aluminum = 2.7 × 103 kg / m, 3 g = 10 N / kg) 3. The aluminum ball with a mass of 270 G is completely immersed in water, and the buoyancy of the ball should be calculated? (ρ aluminum = 2.7 × 103 kg / m, 3 g = 10 N / kg) (8 points) 3. The aluminum ball with a mass of 270g is completely immersed in water. How much buoyancy should the ball bear? (ρ al = 2.7 × 10 cubic kg / M 3 g = 10 N / kg) (8 points)
- 12. The aluminum ball with a weight of 19.6n is slowly immersed in a container full of water, and 9.8N of water overflows from the container. The buoyancy of the aluminum ball is (, from which we can judge whether the aluminum ball is () hollow or solid? Why? It's better to be more detailed, especially the last question,
- 13. A piece of aluminum, the volume is 0.05 cubic meters, immersed in alcohol by buoyancy is
- 14. For a 100 cubic centimeter aluminum block (ρ = 2.7 × 10 cubic kilogram per cubic meter), half of it is immersed in water. What is the buoyancy it receives What is wrong with multiplying the density of aluminum block by G and then multiplying the volume of aluminum block
- 15. A 54G aluminum ball has a volume of 30cm3. Is the aluminum ball solid? If it is hollow, what is the volume of the hollow part?
- 16. The mass of a 50cm 3 aluminum ball is 54G. Is the aluminum ball hollow or solid? If it is hollow, how large is the volume of the hollow part? The mass of a 50cm ^ 3 aluminum ball is 54G. Is the aluminum ball hollow or solid? If it is hollow, what is the volume of the hollow part? If it is filled with water, how much water can it hold? (p aluminum = 2.7 × 10 cubic kg | m3) I'm so anxious! How can the devil hurt me so much! So slow. I'm so angry-
- 17. The mass of a hollow aluminum ball is 27g. After the hollow part is filled with alcohol, its total mass is 51g. The volume of the aluminum ball is calculated. (the density of the aluminum ball is 2.7 × 103kg / m3, and the density of the alcohol is 0.8 × 103kg / m3)
- 18. An aluminum ball has a mass of 810g and a volume of 400cm ^ 3. Is it hollow? (p aluminum = 2.7 * 10 ^ 3kg / m ^ 3) (please answer in three ways)
- 19. The volume of aluminum is 400cm3 and the mass is 810g. Is the ball hollow or solid? What is the volume of Wilbur hollow? I know. Let's talk
- 20. The mass of a hollow aluminum ball is 27g. After the hollow part is filled with alcohol, the total mass is 43g? (ρ aluminum = 2.7 × 103 kg / m3, ρ alcohol = 0.8 × 103 kg / m3)