7. The density of gold is 19 300 kg/m. What is the mass of a gold sphere whose diameter is 0.25 m? A) 87.5 kg B) 158 kg C) 947 kg D) 1260 kg E) 3790 kg
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- 3. What is the mass of an iron sphere whose diameter is 58 cm? The density of iron is 7.9 x 10³ kg/m³?Question 1 a) A container of volume 2000 cm3 is completely filled by carefully pouring 1.7 kg of powder into it. The powder has a Carr’s Index of 25% and particle density of 1.40 kgm3. What is the bulk density of the powder? B)Calculate the bulk density of the powder in the container in part a) if it is tapped repeatedly. C) Calculate the voidage of the powder before and after tapping(1) a. Gold is sold by the troy ounce (31.103 g). What is the volume (in cm3) of 2 troy ounces of pure gold? cm3 b. Mercury is commonly supplied in flasks containing 34.5 kg (about 76 Ib). What is the volume in liters of this much mercury? C. A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density (in g/cm?) of a 200 g rock that displaces 81.0 cm³ of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedes' principle.) g/cm3
- 3. A large piston with an area of 9.75 m² exerts a force of 525 N. What force does the small piston exert if it has an area of 2.75 m²? Conceptual Physics Reading and Study Workbook I Chapter 192.A liquid in a tube has a mass m and a volume V. If the liquid density is 3.00 grams/L and its volume is 9.00 L then what is its mass? a. 18.0 grams b. 0.333 gram c. 333 grams d. 3.00 grams e. 27.0 gramsICE ANOTHER Alloys of gold are rated in karats, a dimensionless unit that is used to indicate the proportion of gold by weight in a gold-containing alloy. If an alloy is one part in twenty-four pure gold, then it is classified as one karat gold. The density of gold is 19.3 × 103 kg/m3. Determine the volume of gold in a 23.0 karat gold necklace that has a weight of 1.63 N. m3 Additional Materials O Reading
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