A merry-go-round accelerates from rest to 0.74 rad/s in 34 s.

Part A

Assuming the merry-go-round is a uniform disk of radius 8.0 m and mass 3.20×10⁴ kg , calculate the net torque required to accelerate it.

Express your answer to two significant figures and include the appropriate units

3. Your company wishes to determine which inventory items generate the most revenue. How could you use QuickBooks to develop this information?

4. At year-end, you wish to confirm the quantity on hand for each inventory item. How would you use QuickBooks to determine the quantity and value of the ending inventory?

5. Your company wishes to view the profitability of each inventory item. How could you use QuickBooks to develop this information?

1.A particular bank requires a credit score of 640 to get approved for a loan. After taking a sample of 107 customers, the bank finds the 95% confidence interval for the mean credit score is:

662 < μ < 739

Can we be reasonably sure that a majority of people will have a credit score over 640 and be able to get the loan?

• Yes
• No

Why or why not?

2. If n=27, x¯(x-bar)=31, and s=12, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population.

Give your answers to one decimal place.

1. Write an essay on the topics below:

1. Control of gene expression in bacteria.
2. Role of control of gene expression in cell differentiation. Give few examples .
3. Comparatively, the control of gene expressions in eukaryotes are more complicated than in prokaryotes. Explain.

On January 1, 2018, the general ledger of ACME Fireworks includes the following account balances:
  

  
During January 2018, the following transactions occur:

January 2. Sold gift cards totaling $12,000. The cards are redeemable for merchandise within one year of the purchase date.
January 6. Purchase additional inventory on account, $167,000.
January 15. Firework sales for the first half of the month total $155,000. All of these sales are on account. The cost of the units sold is $83,800.
January 23. Receive $127,400 from customers on accounts receivable.
January 25. Pay $110,000 to inventory suppliers on accounts payable.
January 28. Write off accounts receivable as uncollectible, $6,800.
January 30. Firework sales for the second half of the month total $163,000. Sales include $17,000 for cash and $146,000 on account. The cost of the units sold is $89,500.
January 31. Pay cash for monthly salaries, $54,000.

I need help to ...

3. Prepare an adjusted trial balance as of January 31, 2018.

4. Prepare a multiple-step income statement for the period ended January 31, 2018.

5. Prepare a classified balance sheet as of January 31, 2018.

6. Record closing entries.

7. Calculate the current ratio at the end of January.

8. If the average current ratio for the industry is 1.80, is ACME Fireworks more or less liquid than the industry average?

9. Calculate the acid-test ratio at the end of January.

2. Create two class, a student class, and a course class, take advantage of the codes provided in the class slides and sample codes. python

3. Create a student object for every student in the UD.txt (you can use a loop for this)

4. Create 6 course objects:

5. After the student user login to their account as we have done in lab 2. Display the following:

When students choose option A, should display the following, where # is the actual number of students enrolled in the class.

Let the students add or drop a classes as they wish. When they choose E, exit the program.

6. For option D, show the courses in the student’s course list.

7. The hard part. Since your program will end when user chose option E. You need to keep track the classes been added and dropped by each students, and who are actually in the classes. Therefore, based on your experiences in lab 3 and 4, create a SI.txt (student info) to store the courses in each student’s course list. Create CI.txt (course info) to store all the students enrolled in each course. This will be executed in the background every time when the user chose option E: Exit. When you run your program, and create your course objects, this information needs to be read into each student and course object. When a student log into his or her account, the student should be able to see what courses is in the course list by chose option D. The number of students in each course also need to be displayed in Option A.

Student info

UD.txt

USERNAME,PASSWORD
sdd233,Pad231
dcf987, BHYW4fw
dgr803,Sb83d2d
mkr212,UNNHS322
lki065,dgw6234
ped332,9891ds
ytr876,dsid21kk
nmh223,3282jd3d2

Lubricants, Inc., produces a special kind of grease that is widely used by race car drivers. The grease is produced in two processing departments—Refining and Blending. Raw materials are introduced at various points in the Refining Department.

The following incomplete Work in Process account is available for the Refining Department for March:

The March 1 work in process inventory in the Refining Department consists of the following elements: materials, $7,200; direct labor, $3,800; and overhead, $20,800.

Costs incurred during March in the Blending Department were: materials used, $45,000; direct labor, $16,400; and overhead cost applied to production, $104,000.

Required:

1. Prepare journal entries to record the costs incurred in both the Refining Department and Blending Department during March. Key your entries to the items (a) through (g) below.

1. Raw materials used in production.
2. Direct labor costs incurred.
3. Manufacturing overhead costs incurred for the entire factory, $666,000. (Credit Accounts Payable.)
4. Manufacturing overhead was applied to production using a predetermined overhead rate.
5. Units that were complete with respect to processing in the Refining Department were transferred to the Blending Department, $692,000.
6. Units that were complete with respect to processing in the Blending Department were transferred to Finished Goods, $780,000.
7. Completed units were sold on account, $1,380,000. The Cost of Goods Sold was $630,000.

2. Post the journal entries from (1) above to T-accounts. The following account balances existed at the beginning of March. (The beginning balance in the Refining Department’s Work in Process is given in the T-account shown above.)

C programing.
Ask user to enter a word on sting and print all possible combinations. (please don't use printer) Using recursion.
example
ask user to input
user: "ABC"
output:
ABC
ACB
BAC
BCA
CAB
CBA

A monatomic ideal gas is heated while at a constant volume of 1.00 * 10^-3 m^3, using a 10 watt heater. The pressure of the gas increases by 5.0 * 10^4 Pa. How long was the heater on?

1. Say 5% of circuit boards tested by a manufacturer are defective. Let Y be the number of defective boards in a random sample of size n = 25.

   1. What kind of random variable is Y ? In particular, write Y ~Distribution(p, n), where you fill in the correct distribution name and parameters p and n.

   2. Determine P (Y ≥ 5).

   3. DetermineP(1≤Y ≤4).

   4. What is the probability that none of the 25 boards are defective?

1. Rejecting the null hypothesis that the population slope is equal to zero or no relationship and concluding that the relationship between x and y is significant does not enable one to conclude that a cause-and-effect relationship is present between x and y. Explain why.

2. Discuss the statistics that must be evaluated when reviewing the regression analysis output. Provide examples of what the values represent and an explanation of why they are important.

What to do

This assignment is going to be pretty simple - we're just going compute frequency counts of certain colors in certain ranges (Histogram of the image).

Because there is no natural way of segregating RGB color ranges, we usually do this color by color. So you'll be computing frequency counts for individual color components individually.

The expectation is that you will write a function as described by a python function signature below (while you are free to do whatever you want, I think doing future parts of the assignment will be easier if the code is structured this way) -

Think about what happens when one is comparing images of different sizes -

• Lets say A is an 4 by 4 image where half of the colors are gray (rgb(128, 128, 128)), and the other half is white (rgb(255, 255, 255))
• When you compute frequencies for Red component, you'll find that 128 occurs 8 times and 255 occurs 8 times also.
• Lets say B is an 8 by 8 image where half of the colors are gray (rgb(128, 128, 128)), and the other half is white (rgb(255, 255, 255))
• When you compute frequencies for Red component, you'll find that 128 occurs 32 times and 255 occurs 32 times also.
• This would mean that images that are basically the same in terms of colors (both half gray and white), end up with different histograms.

To make sure similar images have similar histograms regardless of image size, it is good to normalise frequencies by dividing each frequency count by the total number of pixel in the image.

• After normalization, frequency for red 128 in A would be 8 / (4 * 4) = 0.5
• After normalization, frequency for red 128 in B would be 32 / (8 * 8) = 0.5
• You will be given an image as a text file in the format we've been using so far - assignment_files.zip

How much heat (in kj) is needed to convert 866g of ice at -15*C to steam at 146*C? (Note: The specific heat of ice is 2.03J/g*C and the specific heat of steam is 1.99J/g*C. Delta fus for H20 is 6.01 kj/mol and Hvap is 40.79kj/mol)

As everybody knows that Black objects are black because almost all the light that falls on them is absorbed into the material. Little or no light is reflected back toward our eyes, therefore we see black.

It is also known that, since black objects absorbs all the light they ultimately become heated-up..!

If we see the snow in visible light, It appears to be White. But in the Infrared, it appears to be black. Does that mean that the Snow will feel warm in Infrared lights?