The density of a ring that may be silver, platinum, or a white gold alloy is being measured. Its mass under dry conditions is 2.09 g. In water at 20 °C having a density of 0.998 g/cm³, the mass is found to be 1.89 g. Think & Prepare 1. To find the density of an object you need its mass and volume. How can you accurately determine the volume of the ring? 2. How can you use the weightloss of the ring in water to determine the volume of the ring? What is the density of the ring? g/cm³ For comparison with the final answer (no need to enter an answer for this comparison), = density of gold 19.3 g/cm³ density of platinum = 21.45 g/cm³ density of silver = 10.49 g/cm³ density range of alloy = 14.7 g/cm³ to 16.9 g/cm³

The material that holds the world record for being the least dense solid is silica aerogel, with a density of only 1 mg/cm3. What would be the mass of a cube of silica aerogel that measured 1 m on each side?   Can you show me step by step how to do this? I know that Density=mass*volume

1. If an immersed object displaces 8 N of fluid, what is the buoyant force on the block?EXPLAIN. 2. How should you place a screw on a table such that it exerts the smallest pressure against it?.EXPLAIN WHY. 3. An object with a volume of 100cm^3 is submerged in a swimming pool. What is the volumeof water displaced?. Why?. 4. You apply a flame to 1 L of water for a certain time and its temperature rises by 2°C. If youapply the same flame for the same time to 2L of water, by how much does its temperaturedecrease? . Why? 5. Which has greater kinetic energy? A) a car traveling at 30 km/hr. B) a car of half the mass traveling at 60 km/hr C) both the same. D) need more information EXPLAIN. 6. A melon is projected into the air with 100 J of kinetic energy in the presence of air resistance.When it returns to its initial level its kinetic energy isA) less than 100 J.B) more than 100 J.C) 100 J.D) need more informationEXPLAIN  7. Two identical golf carts move at different speeds. The faster cart…

You have three objects of varying shapes and sizes: Object 1 is a rectangular block of tin. Object 2 is a cube of aluminum. Object 3 is a sphere of copper. a. the density of tin is 5.75g/cm2. What is the mass of object 1 in kg if the rectangular block has a volume of 1.34L? b. what is the volume in cubic inches of object 2 if the cube of aluminum 7.58 inches on a side? c. what is the mass in kg of object 2? the density of aluminum is 2.70g/cm3 d. what is the volume in cm3 of object 3 if the sphere of copper has a diameter 8.62cm? the volume of the sphere is 4 {pi}^3/3 e. what is the mass in kg of object 3? Copper has a density of 8.96g/cm3