Hello, My name is Daniel Azubuike, I was a student tutor for the Cambridge A & AS levels at J-say Prevarsity, which is a pre-college institution, where I tutored Biology and Physics. I am currently volunteer tutor at Alcorn State University during an opening in my school schedule. Outside of school, I am a videographer/photographer and love making videos with artists, organizations, etc. I travel most of the time and play soccer with most strangers I see gathered at a soccer pitch. I also engage in trading stocks in the stock market. I also love visiting but still have not been able to take a pet home due to certain reasons. I volunteer at an Arthritis Foundation located in Detroit, Michigan.
(II) Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long and has cross-sectional area of $2 \times 10^{-9}\, \mathrm{m}^2$. Assuming the concentration of oxygen inside is half what it is outside in the atmosphere, ($a$) show that the concentration of oxygen in the air (assume 21$\%$ is oxygen) at 20$^\circ$C is about 8.7 mol/m$^3$, then ($b$) calculate the diffusion rate $J$, and ($c$) estimate the average time for a molecule to diffuse in. Assume the diffusion constant is $1 \times 10^{-5} \, \mathrm{m}^2/s$.
$$\begin{aligned}\text { Add: } & 5 x^{2} y^{2}-4 x y^{2}+6 y^{2} \\&-8 x^{2} y^{2}+5 x y^{2}-y^{2}\end{aligned}$$
$$\begin{aligned}\text { Add: } & 7 a^{2} b^{2}-5 a b^{2}+6 b^{2} \\&=10 a^{2} b^{2}+6 a b^{2}+6 b^{2}\end{aligned}$$
$$\begin{aligned}\text { Subtract: } & 3 a^{2} b^{4}-5 a b^{2}+7 a b \\&=\left(-5 a^{2} b^{4}-8 a b^{2}-a b\right) \\\hline\end{aligned}$$
$$\begin{aligned}\text { Subtract: } & & 13 x^{2} y^{4}-17 x y^{2}+x y \\& &-\left(-7 x^{2} y^{4}-8 x y^{2}-x y\right) \\\hline\end{aligned}$$
The storage shed shown in the figure has a volume given by the polynomial$$2 x^{2} y+\frac{1}{2} \pi x^{2} y$$a. A small business is considering having a shed installed like the one shown in the figure. The shed's height, $2 x$ is 26 feet and its length, $y,$ is 27 feet. Using $x=13$ and $y=27,$ find the volume of the storage shed.b. The business requires at least $18,000$ cubic feet of storage space. Should they construct the storage shed described in part (a)?
Airplane A is flying directly toward the airport which is 20 miles away. The pilot notices airplane B 45(degrees) to her right. Airplane B is also flying directly toward the airport. The pilot of Airplane B calculates that airplane A is 50(degrees) to his left. Based on that information, how far is airplane B from the airport?
A triangular playground has sides of lengths 475 feet, 595 feet, and 401 feet. What are the measures of the angles between the sides, to the nearest tenth of a degree?
How would you solve 7, 9, 11?
You are an ice skater and are learning to spin. When you stop, the room keeps spinning/moving, and you cannot regain your balance. Which structure is involved in this?
Apart from suffering from recurrent and prolonged infections, Marie Curie experienced the following signs and symptoms: fatigue, rapid heart rate, pale skin, easy bruising, prolonged bleeding from cuts, and dizziness. Bone marrow transplant was not an option at that time and so blood transfusion was the treatment of choice.Please explain the reasoning behind these other signs and symptoms that Curie experienced?Thank you!
People hunt snakes to make bags, belts, and shoes. What will happen to the population of mice and grasses if there is a decrease in the number of snakes in the ecosystem?
