ahsan

u sin(u) = cos(u) when u =

Differentiate, f(u) = u/(u + c/u).

If a number is divided by 4, the result is a perfect square but not a perfect cube. If the same number is divided by 27, the result is a perfect cube but not a perfect square. Find the smallest such number.

S & S Industries is considering an investment in a proposed project which requires an initial expenditure of $100,000 at t = 0. This expenditure can be depreciated at the following annual rates:

Year Depreciation Rate

1 20%

2 32

3 19

4 12

5 11

6 6

THe project has an economic life of six years The project's revenues are forcasted to be $90,000 a year. The project's operating costs (not including depreciation) are forecasted to be $50,000 a year. After six years the project's estimated salvage value is $10000. The company's WACC is 10%, and its corporate tax rate is 40%. What is the project's net present value (NPV)?

How do you determine the rate law on this question? I’m able to find out that [I-] is first order, but for [OCI-] I’m having a little trouble to find the order.

Square root of 10.5 ?

1B. Find if   = and .

Step 1: In the space below, write down your favorite recipe (FROM MEMORY – don’t look up the recipe yet) that you love eating or making. The recipe needs to have at least 5 ingredients. You are giving this recipe to your best friend so they can make it. Therefore, be sure to include all the steps, ingredients, and directions they will need!

Step 2: Find the real recipe you were using for step 1. It can come from either a cookbook or online. Using a different colour or writing utensil go back and add everything you missed on the original recipe in step 1. For example: If I used a pencil to write my recipe in step 1, I will now go back and use a pen to add all the ingredients, directions, or other information I may not have remembered or thought about when I completed step 1. Once you have corrected your recipe, answer the questions below using complete sentences.

Explain 3 differences you found between the recipe you wrote down from memory and the recipe you found in the cookbook or online.

What areas seemed to be the most difficult to remember? Why?

Why is it important to have an accurate recipe when preparing food?

Tungsten has the highest melting point of any metal in the periodic table: 3422°C. The distance between W atoms in tungsten metal is 2.74 Å.

(a) What is the atomic radius of a tungsten atom in this environment? (This radius is called the metallic radius.)

(b) If you put tungsten metal under high pressure, predict what would happen to the distance between W atoms.

Please show working

3.  Find the average velocity for the given interval of time

    y = 1.08t - 30 for  4 +  8

If I were to use a dry measuring cup, pack the ingredient firmly in the cup and level off with a straight edge, I would most likely be measuring which of the following ingredients? 

  Question 25 options:

Sugar 

Flour 

Brown sugar 

Molasses 

What is the proper measuring method to measure 1/3 cup of flour?

  Question 4 options:

Use the dry measuring cup to scoop the flour into the dry measuring cup, then level off with a straight edge

Use a spoon/scoop to scoop the flour into the dry measuring cup 

Use a spoon/scoop to scoop the flour into the dry measuring cup, then level off with a straight edge

Use the dry measuring cup to scoop the flour into the dry measuring cup 

Describe how oxygen and carbon dioxide are transported in the blood, and explain how their loading and unloading is affected by temperature, pH, BPG and PCO2

Suppose that Bob’s preferences can be represented by the utility function 𝑢(𝑥, 𝑦) = 2𝑥 + 3𝑦. The price of y is $20.

(a) Sketch a couple of indifference curves, with utility u= 64 and u=320. (5 points)
(b) Determine Bob’s demand function for x. Sketch it. (5 points)
(c) If the price of x is $10, and Bob’s income is $1000, how many x would Bob consume?
How much income would be devoted to spending on y? (5 points)
(d) Suppose that the price of x doubles to $20. Calculate the income and substitution effects. (10 points)
(e) Is x a normal or inferior good in the range you calculated in part (d)? (5 points)

What is the correct order to describe enzymes and proteins involved in DNA replication starting from initiation? (Primase, ligase, DNA-polymerase , single strand binding proteins , helicase and RNase H)? 

A new implantable drug delivery device is being developed in your lab. The device prototype is a very thin strip (0.1mm × 1mm × 15mm) of polymer coated on both sides with 22 milligrams of solid drug particles. To test the drug delivery profile, you "implant the device by suspending it in a homogenous model fluid that has following:

      Properties: viscosity = 0.0018 Pa.s, density = 1.32 g , temperature = 37°C. The diffusivity of the drug is estimated to be .

1. After 15 minutes, what do you expect the concentration of the drug to be at 1 mm from the device?

2. Determine how far the drug would penetrate into the fluid in 2.2 hours.

3. Clearly explain how you would determine the flux of drug at the surface of the device 10 minutes after implantation. Provide relevant assumptions, equations, and any other information that would be required for your solution.

  For a particular redox reaction, BrO−  is oxidized to  BrO−3 and Ag+ is reduced to Ag. Complete and balance the equation for this reaction in a BASIC SOLUTION. Phases are optional.   BrO−+ Ag+ + OH- -⟶ BrO−3 + Ag + H2O

Q.1: A fruit seller had some apples. He sells 40% apples and still has 420 apples. What is the total number of apples he had originally?

 A student titrates an unknown monoprotic acid with a NaOH solution from a buret. After the addition of 12.35 mL of NaOH, the pH of the solution read 5.22. The equivalence point is reached at 24.70 mL of NaOH. What is the Ka of the acid?

S= 4000x + 53000

Where S is measured in dollars, and x is measured in years and x=0corresponds to the year 1998. Find the predicted sales in 2006,assuming this trend continues.

Hydrofluoric acid, HF (aq), cannot be stored in glass bottles because compounds called silicates in the glass are attacked by the HF(aq). Sodium silicate Na2SiO3, for example, reacts as follows:

Na2SiO3(s) + 8 HF (aq) → H2SiF6(aq) + 2 NaF(aq) + 3 H2O(ɭ) 

(a) How many moles of HF are needed to react with 0.300 mol of Na2SiO3?

(b) How many grams of NaF form when 0.500 mol of HF reacts with excess Na2SiO3?

(c) How many grams of Na2SiO3 can react with 0.800 g of HF?

Roughly speaking, the radius of an atom is about  10,000 times greater than that of its nucleus. If an atom were magnified so that the radius of its nucleus  became 2.0 cm, about the size of a marble, what would  be the radius of the atom in miles? (1 mi 5 1609 m.)

Parametrize the surface S. S is the portion of the cone (x^2/25)+(y^2/25)=(z^2/25) that lies between z=5 and z=7