![](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 does Archimedes' principle show
Archimedes law is a basic principle of mechanics in physics. An object immersed in liquid (or gas) is subject to upward buoyancy, and the buoyancy is equal to the gravity of the liquid displaced by the object
Physics Archimedes principle
When a copper block with a mass of 89g is suspended on the spring dynamometer and immersed in a certain liquid, the indication of the spring dynamometer decreases by 0.08n. What is the density of this object?
According to the landlord's supplement, the original problem is to find the density of liquid, so the solution direction of the first floor is wrong, the answer of the second floor is wrong, and the landlord's calculation is right, the density is not small! Let's talk about the conversion of two density units: 1g / cm ^ 3 = 1g * 1000000 / (1cm ^ 3 * 1000000) = 1000000g / 1m ^ 3 = 1000K
Is Archimedes' principle f floating = P liquid GV row as practical in gas, that is, is it possible to change P liquid into P gas
It's just as practical in gas
Because the definition of Archimedes' principle is: the object immersed in liquid (or gas) is subject to upward buoyancy, and the buoyancy is equal to the gravity of the liquid (or gas) displaced by the object
RELATED INFORMATIONS
- 1. Physics problems. Archimedes principle 1. The bottom area of the thin-walled cylindrical container placed on the horizontal table is 100 square centimeters. The hook of the spring dynamometer is hung with an object block of 10N. Now immerse the object block in the water, and the water surface in the container rises from 16cm to 20cm. Calculate the volume of the liquid discharged by the object block, the buoyancy of the object block, and the indication of the spring dynamometer 2. The gravity of a metal block in the air is 39n. When it is completely immersed in water, the indication of the spring dynamometer (the metal block does not contact the bottom) is 34n. Calculate the buoyancy of the metal block by water and the volume of the metal block
- 2. A hydrogen balloon, with a net weight of 30n, is filled with 20m and 179; the density of hydrogen is 0.09kg/m and that of air is 1.29kg/m;, G=10N/kg (1) How many objects can fall from the bottom of a hydrogen balloon
- 3. But according to Archimedes' principle, f floating = PGV row, Does the water surface rise? If there is no buoyancy, there is no v-row,
- 4. Ask junior three to review physics buoyancy exercises! Buoyancy! Exercises!
- 5. How is Kirchhoff's law of current and voltage derived?
- 6. Kirchhoff's current law and Kirchhoff's voltage law are introduced
- 7. How to understand Kirchhoff's current law? For any node or closed surface in any lumped parameter circuit, at any time, the algebraic sum of all branch currents passing through the node or closed surface is equal to zero
- 8. What is the content of Kirchhoff's law and how to understand it
- 9. 3、 Briefly introduce the contents of Kirchhoff's law of current and voltage and write the formula. 2. Three element method of first order circuit and write the formula? 3. Three elements and formula of sinusoidal alternating current?
- 10. Can Kirchhoff's current law only be applied to nodes? Can voltage law only be applied to closed circuits?
- 11. How can Archimedes' principle be understood
- 12. The formula of Ohm's law in Physics
- 13. What's the difference of Ohm's law formula in AC circuit?
- 14. Try to draw a circuit diagram that conforms to the following Ohm's law expression 1、I=U+E/R 2、I=U-E/R 3、I=-U-E/R 4、I=-U+E/R
- 15. In the experiment of using free falling motion to verify the law of conservation of mechanical energy: if the instantaneous velocity is calculated and verified by measuring the distance between two points on the paper tape, the distance between point 2 and point 4 is S1, the distance between point 0 and point 3 is S2, and the period of tapping is t The relation of T = 0___ ．
- 16. Law of conservation of mechanical energy The trolley with mass m and length L stops on a smooth horizontal plane, and the small block with mass m is placed on the leftmost end of the trolley. Now, a right water balance force F is applied on the small block to make the block move uniformly and linearly from the static state. The friction force between the block and the trolley is f '. When the block slides to the rightmost end of the trolley, the distance of the trolley is s. in this process, when the block slides to the rightmost end of the trolley, the distance between the block and the trolley is s, Is the added mechanical energy of block and trolley FS? Why?
- 17. On the conservation law of physical mechanical energy The radius of the smooth track fixed in the vertical plane is r, and a small ball with mass m moves in a circle on the track in an anti clockwise direction. If the pressure of the ball on the track is 8 mg at the lowest point a, the pressure on the track is 8 mg when the ball moves to the highest point B______ The answer is 2mg, but I don't know why
- 18. Considering the air resistance, is the falling time of different objects at the same height related to the density? As the title!
- 19. How to design experiments in physics to prove that air resistance affects the falling of objects?
- 20. What are the conditions of the law of conservation of momentum, the law of conservation of kinetic energy and the law of conservation of mechanical energy, What's the difference?