Athickness of 2l is initially at a an infinite plate having temperature of t, and the plate is suddenly exposed to a convection environment at t with the heat transfer coefficient h. the thermal diffusivity of the material is a and the thermal conductivity is k. calculate the center temperature as a function of time using "implicit euler method." the project report should contain: 1. description of the problem 2. discussion of numerical method (develop equations by hand) presentation of results 3. (1) use the following data: the plate is aluminum: 8.4x105 m2/s and k-204 w/m. oc the plate thickness is 0.05 m (l= 0.025 m) - h 800 w/m°c t 70°c t 20°c (2) plot the centerline and surface temperatures as a function of time up to 100s 4. discussion of results (1) effects of ax and/or at (2) comparison with an analytical solution 5. concluding remark 6. appendix

Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

Which scenarios are most effectively explored by conducting an experiment? there is more than one correct answer. select all that apply. researchers want to study the effectiveness of a particular drug for treating migraines. they want to know which dosage of the drug yields the best results with the least side effects. to ensure fair results, the researchers want to ensure that participants and dosage administrators do not know which dosage participants receive. a teacher wants to plan a class fieldtrip and quickly determine where students prefer to go for the class fieldtrip. a car mechanic wants to know which of two engine brands makes better-performing engines. he wants to test the engines in identical situations and rate their performance in a way that can be fairly measured. a chemist studies the properties of a metal compound. she wants to know how the sample size of the metal affects its ability to conduct electricity. she wants to conduct the research in a controlled environment to minimize bias. a realty company wants to know the average income of its clients. the company wants to gather data income from current clients.