Engineering, 01.07.2021 15:40 amayarayne5
Consider a sphere ball that is made of a hypothetical metal. The diameter of the sphere ball is 0.5 m. The properties of the sphere ball k = 1 W/m-K, Q = 1 X 10-6 m2/s. The sphere ball is initially at a uniform temperature of 10 °C and is dropped into water at 90 °C. The convective heat transfer coefficient is h = 100 W/m2K. Determine the temperature at r = ro/4 from the center of the sphere ball 20 minutes after the sphere ball is dropped into the water using the one-term approximation method. Please elaborate your answer. Your answer must include Biot number, constants such as A1, explanation on your solving process, and the estimation for the temperature value. Grading rubric: accurate estimation of Biot number (15 points), accurate estimation of constants such as A1 (15 points), accurate use of equations and accurate estimate for the temperature (20 points). Note: You are not allowed upload any file. HTML Editor is disabled.
Answers: 3
Engineering, 04.07.2019 18:10
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
Answers: 1
Engineering, 04.07.2019 18:10
The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false
Answers: 1
Engineering, 04.07.2019 18:10
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
Answers: 2
Consider a sphere ball that is made of a hypothetical metal. The diameter of the sphere ball is 0.5...
World Languages, 24.11.2019 07:31
Spanish, 24.11.2019 07:31
English, 24.11.2019 07:31
English, 24.11.2019 07:31
History, 24.11.2019 07:31
Mathematics, 24.11.2019 07:31
Biology, 24.11.2019 07:31
English, 24.11.2019 07:31
Mathematics, 24.11.2019 07:31