Place a square block on the horizontal table with a side length of 10cm. The block weighs 1kg. Calculate the pressure of the block on the table?

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• 1. Physics! A square wood block with 10 cm side length and 6 N weight is placed on a horizontal table with an area of 0.9 square meters
• 2. A square wood block with 10 cm side length and 6 N weight is placed on a horizontal table with an area of 0.9 square meters Find the pressure of the block on the table. If placed in the center of the 80 square centimeter table, find the pressure of the wood block on the table.
• 3. Physics problem: put a piece of cube wood with a side length of 10 cm in the center of the horizontal table with an area of 1 m and 178; to solve the problem How much pressure does the wood block exert on the tabletop? P wood = 0.6 × 10 ^ 3kg / m ^ 3, g = 10N / kg)
• 4. The side is a 10 cm cube with a gravity of 100 n. put it in the center of the table with a side length of 50 cm The force of 20n is the pressure on the table at this time
• 5. Cut the largest circle on a 20 cm square cardboard. The area of the circle is (), and the remaining leftover material is ()
• 6. Subtract the largest circle from a cube cardboard with a side length of 10cm. The area of this circle is () cm2? The remaining leftover material is ()
• 7. Saw the largest circle on a square board with a side length of 20 cm. The area of the circle is______ Square centimeter. What's the rest of the leftover material______ Square centimeter
• 8. Only know the diameter of the circle, diameter 10cm, how to calculate the largest square area in the circle?
• 9. In a circle with a diameter of 10 cm, draw the largest square. The diagonal of the square is a circle () A. Radius B. diameter C. perimeter D. arc length
• 10. Cut the largest square on a circular paper with a diameter of 10 cm. What is the area of the square?
• 11. What is the pressure of aluminum on the table when a cube aluminum block with a side length of 10 cm is placed in the middle of a table with an area of 1 square meter? (p aluminum = 2.7P water)
• 12. What is the pressure on the table of a square with a weight of 10N and a side length of 10cm?
• 13. The side length of a square block is 10 cm. Put it on a horizontal table and calculate its pressure on the table (it is known that the density of wood block is 0.6 * 10 cubic n / kg; g = 10N / kg)
• 14. A square metal block with a side length of 0.1M and a mass of 10kg is placed in the center of a horizontal desktop with an area of 1 square meter, and the metal block is pushed horizontally by 12n Liya How much pressure does the metal block exert on the table? (g = 10)
• 15. As shown in the figure, half of the square metal block with a side length of 0.1M is placed on the horizontal table with an area of 1m2, and the size of the metal block is small As shown in the figure, half of the square metal block with side length of 0.1M is placed on the horizontal tabletop with an area of 1m2, and the density of the metal block is 5 × 103kg / m3. When the pressure of the metal block on the tabletop is 4 × 103pa, the indication of the spring dynamometer is n.
• 16. When the reading of the spring scale is 10N, the pressure of the metal block on the table is 4000Pa A square metal block with a side length of 0.1M is placed on a table with an area of 1m2. When the reading of the spring scale is 10N and the pressure of the metal block on the table is 4000Pa, what is the density of the metal block?
• 17. As shown in the figure, a square metal block with a side length of 0.1M is placed on a table with an area of 1m2. When the reading of the spring scale is 10N, the pressure of the metal block on the table is 4 × 103pa, then the density of the metal block is () A. 5×103kg/m3B. 4×103kg/m3C. 3×103kg/m3D. 2×103kg/m3
• 18. As shown in the figure, the closed container filled with water is placed on the horizontal table, and the ratio of the upper and lower bottom areas is 4:1. At this time, the pressure of water on the bottom of the container is f, and the pressure is p. when the container is placed on the horizontal table after being inverted, the pressure and pressure of water on the bottom of the container are () A. F，PB. 4F，PC. 14F，PD. F，4p
• 19. As shown in the figure, the weight of the cylindrical container placed on the horizontal table is 5N, and the bottom area is 100cm2. When the container is filled with a certain liquid, the pressure at point a in the container is 2.4 × 103pa, then the pressure of the liquid on the bottom of the container is______ PA, the pressure of the container on the horizontal table is______ Pa．
• 20. The bottom area of a cone-shaped beaker is 100cm2. When the beaker is filled with water, the height from the water surface to the bottom of the beaker is 10cm, and the pressure on the table is 0 The bottom area of a cone-shaped beaker is 100cm2. When it is full of water, the height from the water surface to the bottom of the beaker is 10cm, and the pressure on the table is 780p. Now a metal block is suspended by a spring dynamometer, and it is gently immersed in the water. When it is completely immersed, the indication of the spring dynamometer is 4.7n, and then the metal block is slowly taken out, and the pressure of the beaker on the table is reduced to 720p 1. Is there any change in the pressure of water on the bottom of the cup before and after the metal block is immersed in water? How much P is each? 2. If we know that P iron = 7.9g/cm3, P copper = 8.9g/cm3, p aluminum = 2.7, P cast iron = 7, what kind of metal is the metal block made of?