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Measuring egg density Please use the spring dynamometer beaker water thin line to design a program to measure the density of eggs. Write the experimental steps Note: apply the knowledge of mass density instead of force Please use spring dynamometer beaker and water thin line measuring cylinder to design a scheme for measuring egg density. Write out the experimental steps Note: apply the knowledge of mass density instead of force
It seems that we need to use measuring cup tools, right?
1. Use the spring scale to measure the mass m of the egg. If the gravity is measured, use the method of M = g / g to calculate it
2. Use a thin line to tie the egg, immerse it in the full water, and measure the volume of the overflow water with a measuring cylinder, which is the volume V of the egg
3. Density = m / V, that's it
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- 3. Please use spring dynamometer, beaker, water and thin wire to design a scheme for measuring the density of eggs Find the experimental steps and density expression
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- 8. The density of wood block is 0.6 * 103 kg / m3, and the volume is 2 decimeters. When it floats on the water, calculate the buoyancy of the wood block (g = 10N / kg)
- 9. A piece of wood with a mass of 1kg and a density of 0.6 × 103kg / m3 floats on the water surface. How much buoyancy does the object bear? What is the volume of the immersed part?
- 10. (1) A brick with a thickness of 5cm and a density of 2.5 × 103kg / m3 is placed on the horizontal ground. As shown in figure (a), what is its pressure on the ground? (2) Using this kind of brick to build a wall, the gap between the upper and lower layers of brick and between the brick and the horizontal wall base is filled with cement slurry with thickness of 1cm and density of 2.0 × 103kg / m3, as shown in figure (b). If the maximum pressure that the wall base can bear is & nbsp; 4.35 × 105Pa, how high can the wall be built at most? (g = 10 N / kg)
- 11. A granite stone with school motto has a mass of 31.8t and a density of 2.65 times 10 cubic kilogram per cubic meter
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- 18. The height, width and thickness of a rectangular flower rock monument are 10m, 3M and 2m respectively, the Rou is 2.5 × 103 times, and the maximum pressure on the ground is 1.2 × 103 times. In order to make the ground bear the monument, the height of the monument is 1m, the Rou is 2 × 103 times, so that it can be put on the rectangular cornerstone? 2 if the monument stands directly on the ground, the pressure on the ground is?
- 19. The height, width and thickness of a rectangular flower jar monument are 10m, 3M and 2m respectively, and the density is 2500kg / M & sup3; the ground can bear the maximum pressure of 150000pa. In order to make the ground can bear the monument, the monument is erected on the rectangular cornerstone with the height of 1m and the density of 2000kg / M & sup3 (1) What is the quality of the monument? (2) If the monument stands directly on the ground, what is its pressure on the ground? (3) what is the minimum bottom area of the cornerstone?
- 20. This granite is 14.7 meters long, 2.4 meters wide and 1 meter thick. What's its mass? The density of granite is 2.8 * 10 cubic kg / M cubic