Given weight, density, find volume

Volume = weight divided by density

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1. Calculation formula of alloy density
2. How to calculate the density of alloy? What is the idea?
3. Finding the density of alloy It is known that the density of a is ρ A and that of B is ρ B. the density of an alloy made of two metals of equal mass is
4. The problem of alloy density There is an alloy with a density of 1.2 * 10 ^ 3km / m ^ 3, which is composed of two of the following materials. According to the data of the following alloy materials, it can be judged that the two metals that make up the alloy may be? 1. Gold: 19.3 * 10 ^ 3 [density] 2. Lead: 11.3 ^ 10 ^ 3 [density] 3. Silver: 10.5 * 10 ^ 3 [density] 4. Copper: 8.9 * 10 ^ 3 [density] ——The above density unit is the international primary unit: kg / m ^ 3 Sorry, the density of the above alloy should be 12.0 * 10 ^ 3kg / m ^ 3
5. How to calculate the density of alloy in Physics
6. In order to save energy and reduce emissions, hollow bricks are widely used in buildings to replace solid bricks. As shown in the figure, the specification of a hollow brick with a mass of 3.6kg is 20cm × 15cm × 10cm, and the solid part of the brick accounts for 60% of the total volume Find: (1) the density of the brick material; (2) How many kilos of material can be saved in the production of each hollow brick compared with the solid brick of the same specification?
7. It is known that A1 = 2 points (an, an + 1) are on the image of function f (x) = x2 + 2x, where n = 1,2,3... (1) it is proved that the sequence {LG (1 + an)} is an equal ratio sequence
8. Probability theory! Let the density function of random variable X be f (x) = {3x ^ 2,0 ≤ x ≤ 1,0, others} (1) Find D (x); (2) find P {1 / 2 ≤ x ≤ 1}
9. Given that f (x) is a quadratic function, and f (2 + x) is an even function, and f (0) = 3, f (2) = 1, f (x) takes the maximum value of 3 and the minimum value of 1 on [0. M], then the value range of M is obtained
10. If we add odd functions with the same domain, is the result odd or even
11. Know volume and density, how to calculate weight?
12. The weight of a bottle of alcohol is 700g when half of it is used, and 800g when 13 of it is used
13. How much does 100 grams weigh? Like what? Or how much does a chicken wing weigh
14. It is known that the diameter of the cylinder is 1.28 meters, the height is 1.75 meters, and the gram weight per square meter is 75 grams?
15. How to calculate the weight of round steel
16. How many kilos does kg equal in weight unit?
17. How to use CAD to calculate area and perimeter? How to calculate weight after calculation? Specific steps. It is required to use kg / m ^ 3 as the unit Please write down the weight formula (kg), what is the weight of this cone?
18. What is the unit of weight (kg)?
19. What's the weight of iron It's better to have a formula. And the density of iron
20. Knowing the volume of a piece of iron, how to calculate its weight Reward score: 10 - 14 days and 23 hours to the end of the problem 150cm long 50cm wide Thick 2cm, who told me how heavy it is