Mathematics

Mathematics, 22.07.2019 03:30, kathrynsalomon

The diameter of a sphere is 10 in. what is the spheres volume?

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Engineering, 11.07.2019 04:20, chrissycherry

Spheres with 40-mm diameter are heated to a uniform temperature of 400°c and then suddenly removed form the over and placed in a forced air bath operating at 25°c with a convection coefficient of 300 w/m^2 k on the sphere surfaces. the thermophysical properties of the sphere material are p=3000 kg/m^3 c=850j/kgk, and k=15 w/m k. 1)- how long must the spheres remain in the air bath for 80% of the thermal energy to be removed? 2)- once 80% of the thermal energy is removed, the spheres are then placed in an adiabatic enclosure that prevents any more heat transfer between the spheres and their surroundings what uniform temperature will the spheres eventually reach?

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Mathematics, 27.07.2019 15:50, figueroajorge8291

The volume of a sphere is directly proportional to the cube of its diameter. the volume of a sphere with a diameter of 12 inches is 288π in3. in terms of π, what is the constant of proportionality? to the nearest tenth, what is the volume of a sphere with a diameter of 3 inches?

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Mathematics, 29.07.2019 17:00, Nateycorn95701

Which is greater, the total volume of three spheres, each of which has a diameter 3 in., the volume of one sphere that has a diameter 8 in., or the volume of a hemisphere with a diameter of 9 in.? a) the volume of three spheres, each with a diameter of 3 inches, is greater. b) the volume of one sphere with a diameter of 8 inches is greater. c) the volume of the hemisphere with a diameter of 9 in. is greater. d) the two volumes are the same.,

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Mathematics, 29.10.2019 01:31, dijonmckenzie3

3. a department store manager is planning to move some cement spheres that have served as traffic barriers for the front of her store. she is trying to determine the relationship between the mass of the spheres and their diameter in meters. she knows that the density of the cement is approximately 2,500 kg/m3. a. write a function that represents the relationship between the volume of a sphere and its diameter. explain how you determined the equation. b. write a function that represents the relationship between the mass and the volume of the sphere. explain how you determined the function. c. write a function that could be used to determine the mass of one of the cement spheres based on its diameter. interpret the equation in context. d. determine an appropriate domain and range for part (c). e. what is the approximate mass of a sphere with a diameter of 0.9 m?

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