Buzz
Solve exercise C1 on page 28 Physics 8 textbook
Problem:
What does the deformation of rubber membranes (H.8.3b) indicate?
Solution:
The deformation of rubber membranes indicates that the liquid exerts pressure on the bottom of the tank and the tank walls.
Solve exercise C2 on page 28 Physics 8 textbook
Problem:
Does liquid exert pressure on the tank in only one direction like solids?
Solution:
Liquid exerts pressure on the tank in all directions, not just one direction like solids.
Solve exercise C3 on page 29 of Physics 8 textbook
Problem:
What does this experiment demonstrate?
Solution:
This experiment demonstrates that the liquid exerts pressure in all directions on objects within it.
Solve exercise C4 on page 29 of Physics 8 textbook
Problem:
Based on the experiments above, choose the appropriate words for the blanks in the following conclusion:
Liquid not only exerts pressure on the walls of the tank but also on the bottom of the tank and objects within the liquid.
Explanation:
Liquid not only exerts pressure on the tank walls but also on the tank bottom and objects within the liquid.
(1) walls
(2) bottom
(3) within the liquid.
Solve exercise C5 on page 30 of Physics 8 textbook
Problem:
Pour water into a container with two interconnected branches (equilibrium container). Based on the formula for calculating liquid pressure mentioned above, compare the pressures pA, pB, and predict what state the water levels will be in when the water in the container is stationary in the three states shown in figures 8.6a, b, c.
Conduct an experiment to test, then find the appropriate words to fill in the blanks in the conclusion below:
Conclusion: In an equilibrium container containing the same stagnant liquid, the liquid levels in the branches are always at ........... height.
Solution:
- Prediction: The water level in the container will be in the state as shown in figure 8.6c of the Physics 8 textbook (water levels in two branches are equal)
- Conclusion: In an interconnected container holding the same stationary liquid, the liquid levels in the branches always remain at the same height.
Solve exercise C6 on page 31 of Physics 8 textbook
Problem:
Answer the question at the beginning of the article.
'Why do deep-sea divers have to wear pressure-resistant diving suits?'
Explanation:
When diving deep under the sea, the pressure exerted by the seawater is very high. Without wearing a diving suit, deep-sea divers would not be able to withstand this pressure.
Solution for Exercise C7 on Page 31 of Physics 8 Textbook
Problem:
A container, 1.2m tall, is filled with water. Calculate the pressure of the water on the bottom of the container and at a point 0.4m above the bottom.
Solution:
Solution for Exercise C8 on Page 31 of Physics 8 Textbook
Problem:
In the two containers depicted in figure 8.8, which container can hold more water?
Solution:
In the two pots depicted in figure 8.8 of the textbook, the one with a taller spout can hold more water because the pot and the spout are interconnected vessels, so the water level in the pot and the spout always remains at the same height.
Solution for Exercise C9 on Page 31 of Physics 8 Textbook
Problem:
Figure 8.9 illustrates a sealed container equipped with a device used to determine the level of liquid it contains. Container A is made of opaque material, while device B is made of transparent material. Explain the operation of this device.
Solution:
Binh A and device B are two branches of the interconnected container, the liquid level of these two branches always remains the same. Therefore, by observing the liquid level in branch B (thanks to the tube made of transparent material), we can determine the liquid level of binh A.
Chapter I Mechanics, you study the lesson of Force - Newton. Check the hints to solve exercises on pages 36, 37, 38 of Physics 8 to study Physics 12 well.
Atmospheric pressure is the next topic in Chapter I Mechanics of Physics 8 grade 11. Also, check the hints to solve exercises on pages 32, 33, 34 of Physics 8 to grasp the knowledge and study Physics 8 well.
