
Consider a wire of length L = 0.30m that runs north-south on a horizontal surface. There is a current of I = 0.50A flowing north in the wire. (The rest of the circuit, which actually delivers this current, is not shown.) The Earth's magnetic field at this location has a magnitude of 0.50 (or, in SI units, 0.5 X10^-4 Tesla) and points north and 38 degrees down from the horizontal, toward the ground. What is the size of the magnetic force on the wire due to the Earth's magnetic field? In considering the agreement of units, recall that 1T=1N/(AxM)(Figure 1). a. Express your answer in newtons to two significant figures.
b. Now assume that a strong, uniform magnetic field of size 0.55T pointing straight down is applied. What is the size of the magnetic force on the wire due to this applied magnetic field? Ignore the effect of the Earth's magnetic field.
The direction of the magnetic force is perpendicular to both the direction of the current flow and the direction of the magnetic field. Here is a "right-hand rule" to help you determine the direction of the magnetic force. (Figure 2)

c. What is the direction of the magnetic force acting on the wire in Part B due to the applied magnetic field?
d. Assume that the applied magnetic field of size 0.55T is rotated so that it points horizontally due south. What is the size of the magnetic force on the wire due to the applied magnetic field now?
In: Physics
Employees who are paid a salary:
are never paid an overtime pay rate because they are considered management.
are required to earn overtime if they work more than 50 hours in a week.
may be paid overtime based on the results of the “salary level test”.
must be paid every two weeks and earn extra paid time off related to the number of hours over 40 they work each week.
In: Operations Management
|
A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 5.4%. The probability distributions of the risky funds are: |
| Expected Return | Standard Deviation | |
| Stock fund (S) | 15% | 44% |
| Bond fund (B) | 8% | 38% |
| The correlation between the fund returns is .0684. |
|
What is the expected return and standard deviation for the minimum-variance portfolio of the two risky funds? (Do not round intermediate calculations. Round your answers to 2 decimal places.) |
| Expected return | % |
| Standard deviation | % |
In: Finance
H0: _________________________________________
Ha: _________________________________________
left-tail right-tail two-tail
z-test t-test df = _________________
test statistic: _________________________
critical value: ________________________
p-value: ____________________________
____ % confidence interval: __________________________
In: Statistics and Probability
The following is a list of 12 control plans from this chapter or from Chapters 8 and 9. These are followed by a list of 10 system failures that have control implications. Match the 10 system failures with a control plan that would best prevent the system failure from occurring. Write one or two sentences explaining each answer. Because there are 12 control plans, you should have two letters left over.
Control Plans
A. Enter customer order close to where customer order is prepared
B. Turnaround document
C. Independent shipping authorization
D. Populate input screens with master data
E. One-for-one checking of the goods, picking ticket, and sales order
F. Preformatted screens
G. Confirm input acceptance
H. Reasonableness check
I. Backup procedures (for data)
J. Program change controls
K. Digital signature
L. Personnel termination controls
System Failures
1. Handsome Corp. has recently received customer complaints that the goods they receive frequently are not accurate. Sometimes they receive the wrong goods and sometimes the wrong quantity.
2. Eagle Company receives Internet orders from established customers. Recently the company received a number of orders from individuals impersonating legitimate customers.
3. A recent audit of the order-entry process at James, Ltd. determined that the clerks were making many errors while entering data such as the customer’s name and address from the customer order documents.
4. A former employee of Vittoria Corp, gained access to the order entry department after hours and logged on to the system using her old user ID. She entered an order for a legitimate customer but instructed the system to ship the goods to her home address.
5. Little Field, Inc.’s field salespeople record customer orders on prenumbered order forms and then forward the forms to central headquarters for processing. Jolita Prtyzakz, one of the company’s topsalespeople, mailed 40 customer orders to headquarters on one Friday afternoon. Unfortunately, they were misplaced in the mail and did not reach headquarters until two weeks later.
6. Bright Skies Inc.’s clerks key order data into the order entry system at one of several PCs. During the first week of using this system, every sales order produced by the computer was missing the data for the “ship-to” address.
7. At Tampa Bay, Inc., the finished goods warehouse delivers goods to the shipping department, accompanied by the picking ticket. Then the shipping department prepares a packing slip. A recent audit discovered that a dishonest warehouse employee had been forging picking ticket documents, allowing him to have goods shipped to an accomplice.
8. The job of Mark, a programmer at Tolland, Inc., included doing maintenance programming for the order entry application. Doreen altered the programs so that the credit-checking routine was bypassed for one of the customers, a company owned by her uncle.
9. After receiving goods from the warehouse, with attached picking ticket, shipping clerks at Golden Bowl Company key in the sales order number, item numbers, and quantities. The computer then records the picking ticket data and prints a packing slip. Customers have been complaining that the packing slip is not accurate as to items and quantities.
10. Clerks in the shipping department at Kaynick, Inc. scan picking tickets to retrieve the appropriate open sales order and then scan another bar code on the picking ticket to trigger the recording of the shipment. Then a packing slip is prepared, attached to the box, and the box is placed on the conveyer to the loading dock. They have discovered that some shipments are not being recorded by the system.
In: Accounting
In recent years, the optimal management structure has shifted from a narrow span of control to a broad or wide span of control. Earlier, three to seven individuals were reporting to the same manager (narrow span), whereas today, it is common to have twenty or more staff members reporting to the same person (broad span), as stated in the course textbook. Based on the readings for this week, the South University Online Library, and the Internet, respond to the following discussion points:
Identify at least one pro and one con for each span of control described above.
State, with reasons, which of the two structures you would recommend.
In: Nursing
In: Advanced Math
In: Finance
amou Company makes filing cabinets of two varieties, applying overhead at the rate of $85 per machine hour. Total actual overhead for the year is $1,500,000. Production data are as follows: Unit A Unit B Direct Material Cost $40 $50 Direct Labor Cost $25 $40 Budgeted Units Produced 4,000 7,500 Mamou is considering changing its overhead application method to an activity based system. A study uncovers three overhead activities budgeted as follows: Manufacturing set ups (total cost $320,000); Machine costs (total cost $936,000); and Engineering costs (total cost $264,000). Data on appropriate budgeted drivers are shown below:
UnitA UnitB
Number of Setups
100 60
Machine Hours
8,000 10,000
Engineering Shifts (8 hrs)
120 100
a. Calculate the total cost to make one of each type of filing cabinet, including material, labor, and overhead, applying overhead using the single overhead cost driver of $85 per machine hour: UnitA ___________ UnitB ____________
b. Will overhead be over- or underapplied, and by how much, using this approach? Overapplied _____ Underapplied _____ Amount ___________
c. What will you do with the amount of overapplied or underapplied overhead? (Choose one of the following actions)
1. Do nothing-leave it in the cost of the goods in inventory. _________
2. Adjust the cost of goods sold or related inventory accounts. ________
3. Report it as a separate item on the income statement. __________
d. Calculate the total cost to make one of each type of filing cabinet, including material, labor, and overhead, applying overhead using activity based costing and the drivers indicated in the problem: UnitA ____________ UnitB ____________
In: Accounting
On pages 7-7 and 7-8 (Sections 7-3a and 7-3b), the text explains what are casualty and theft losses that an individual may deduct, even though the losses are related to personal use property. The text gives examples of occurrences that cause losses that do not qualify as casualty losses, and states that misplacing items does not count as a “theft.” However, the IRS gives more detailed guidance on these issues.
In: Accounting