Glass is a notorious source of metal ion contamination. three glass bottles were crushed and sieved to collect 1 mm pieces. to see how much al3+ could be extracted, 222 ml of a 0.05 m solution of the metal-binding compound edta was stirred with 0.50 g of the 1 mm glass particles in a polyethylene flask. the al content of the solution after 2 months was 5.2 μm. the total al content of the glass, measured after completely dissolving some glass in 48 wt% hf with microwave heating, was 0.80 wt%. what fraction of the al was extracted from the glass by edta? (enter your answer to 5 decimal places.)

5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.