Floating, sinking and floating

1. Buoyancy: all objects immersed in liquid are subject to the vertical upward force of liquid, which is called buoyancy. The direction of buoyancy is always vertical upward. (objects are also subject to buoyancy in air) 2. Conditions for objects to sink and float: (initially immersed in liquid) method 1: (specific buoyancy and gravity of objects) (1) f float < g

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1. Xiao Ming used the density of 1.5 × 10 & sup3; kg / M & sup3; to build a "boat". The volume of the clay he used was 20cm & sup3; the maximum drainage volume of the boat was 100cm & sup3;; ask: the maximum buoyancy of the boat he built? (g = 10N / kg)
2. A spring dynamometer hangs an object and submerges it in water. The indication is 6N. The gravity of draining water is 4N. The gravity of the object is 10N. If it is immersed in kerosene, the buoyancy it receives will be (reduced) Why is it smaller? The density of the liquid decreases, but the volume of the liquid displaced by the object increases. Don't the two counteract each other?
3. Why does the buoyancy of a ship from the sea to the river remain unchanged, while that of a submarine from the sea to the river decreases? Why does the buoyancy of a ship remain unchanged?
4. What's the difference between the buoyancy formula F = P liquid GV row and F = g
5. What is g in the formula for calculating buoyancy
6. Derivation of buoyancy formula from the cause of buoyancy If the title is more detailed, it's better to have a picture
7. What is the cause of buoyancy_____________________ Expressed as__________ .
8. How to calculate the buoyancy of water?
9. On the buoyancy formula of water I've always been confused with F = g and Archimedes principle Take this question for example The submarine begins to dive from the sea until it is completely submerged. In this process, how does the buoyancy of the sea change If f is used in this problem, the buoyancy force should be constant In Archimedes' words, row V becomes larger and row f becomes larger How to judge I'm crazy about buoyancy
10. Buoyancy formula In f-float = g-row = pgv-row, if an object floats or floats, then buoyancy is the gravity of the object. In this case, does g-row refer to the gravity of the object or the gravity of some objects immersed in water? Are the two equal?
11. Atmospheric pressure calculation formula
12. What is the formula for calculating atmospheric pressure?
13. Atmospheric pressure formula?
14. How to use atmospheric pressure to drop an egg into a bottle? And how to make the egg spit out of the bottle?
15. The formula of buoyancy All formulas for buoyancy
16. Buoyancy formula
17. Calculation formula of buoyancy
18. On all deformations of buoyancy formula To be complete It's all the variations of the formula of Archimedes' principle
19. 1. When an oil tanker sails in the Yangtze River, the volume of boiled water is 300 cubic meters. When 100 cubic meters of fuel oil is unloaded at the wharf, how many cubic meters of boiled water does the oil tanker discharge? 2. Give some examples of "ascending" depending on air buoyancy, and give some examples of "ascending" depending on air velocity?
20. First, a bag of water is packed in a light plastic bag, and the gravity of the water is measured by a spring At this time, put it into a cylinder of water at a constant speed, and the indication of dynamometer changes? (I think it should be kept unchanged. After all, the density is equal, so there is no pressure difference.)