The density of a ring that may be silver, platinum, or a white gold alloy is being measured. Its massunder dry conditions is 2.09 g. In water at 20 °C having a density of 0.998 g/cm³, the mass is foundto be 1.89 g.Think & Prepare1. To find the density of an object you need its mass and volume. How can you accurately determinethe 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/cm³For comparison with the final answer (no need to enter an answer for this comparison),=density of gold 19.3 g/cm³density of platinum = 21.45 g/cm³density of silver = 10.49 g/cm³density range of alloy = 14.7 g/cm³ to 16.9 g/cm³

The volume of the ring is 0.2004 cm3The density of the ring is 10.42 g/cm3Explanation:

Answered: The density of a ring that may be…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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
A helium balloon (in the shape of a sphere) has radius 7.10 m. For the density of air, please use 1.29 kg/m^3, and for Helium, use .179 kg/m^3 Part A How much additional mass (payload) could this balloon lift? You should assume the balloon's skin, plus other parts of the balloon's structure have a total mass of 900 kg. Note however that this number does NOT yet include the mass of the helium filling the balloon, which you will need to account for! Express your answer using two significant figures. ▸ View Available Hint(s) m = for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A Submit Constants kg
The density of a ring that may be silver, platinum, or a white gold alloy is being measured. Its mass under dry conditions is 4.29 g. In water at 20 °C having a density of 0.998 g/cm³, the mass is found to be 4.09 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
Q3. Péclet number - We've seen the Péclet number Pé vl as a useful metric to D determine if stirring (Pé > 1) is more efficient than diffusion (Pé < 1) for mixing solutions. "Stirring" here can designate any process which applies a force on the molecules, resulting in a velocity v. a) Show that the Péclet number, like the Reynolds number, is unitless. Let's think about why scale (f) matters for mixing. 2-DNA, a DNA polymer containing 48,502 base pairs, has a diffusion coefficient of D field of 1 V/m, we can expect 1-DNA to reach a terminal velocity of 30 nm/s. 6.4 × 10-13m²s¬1. Under an electric b) Find the Péclet number for a system of dimension of e = 10 cm. This corresponds to the scale of most benchtop instruments used to manipulate or separate biomolecules. c) Find the Péclet number for a system of dimension of e to the scale over which most cellular processes occur. d) Find the scale l for which diffusion is just as efficient as electric field for displacing = 10 µm. This…
Suppose you have a coffee mug with a circular cross section and vertical sides (uniform radius). What is its inside radius if it holds 385 g of coffee when filled to a depth of 7.5 cm? Assume coffee has the same density as water of 1000 kg/m³. Think & Prepare 1. What is the shape of the coffee mug? How would you calculate the volume of the coffee mug? r= cm

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