My physics class did an online lab thing where a charged plastic rod is brought near a magnetic and non-magnetic conduction rod about the same size. Both ends of the magnet and the non-magnetic rod were attracted to the charged rod. I am a little confused and what forces/ different forces are causing this
Question: If the charged rod is attracted to the magnetic and the non-magnetic rod in the same way, can you conclude that there are any special interactions or forces between either of the magnetic poles and the rod?
Question: Is the interaction between magnets a different phenomenon from the electrostatic interaction of charges? Cite evidence for your answer (use question 2 to help). Keep in mind we are talking about electrostatics i.e. the charges are not moving, NOT electrodynamics where charges are in motion.
In: Physics
Thirty-three small communities in Connecticut (population near 10,000 each) gave an average of x = 138.5 reported cases of larceny per year. Assume that σ is known to be 41.5 cases per year. (a) Find a 90% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error? (Round your answers to one decimal place.)
| lower limit | |
| upper limit | |
| margin of error |
(b) Find a 95% confidence interval for the population mean annual
number of reported larceny cases in such communities. What is the
margin of error? (Round your answers to one decimal place.)
| lower limit | |
| upper limit | |
| margin of error |
(c) Find a 99% confidence interval for the population mean annual
number of reported larceny cases in such communities. What is the
margin of error? (Round your answers to one decimal place.)
| lower limit | |
| upper limit | |
| margin of error |
In: Math
Thirty-two small communities in Connecticut (population near 10,000 each) gave an average of x = 138.5 reported cases of larceny per year. Assume that σ is known to be 42.5 cases per year.
(a) Find a 90% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error? (Round your answers to one decimal place.)
| lower limit | |
| upper limit | |
| margin of error |
(b) Find a 95% confidence interval for the population mean annual
number of reported larceny cases in such communities. What is the
margin of error? (Round your answers to one decimal place.)
| lower limit | |
| upper limit | |
| margin of error |
(c) Find a 99% confidence interval for the population mean annual
number of reported larceny cases in such communities. What is the
margin of error? (Round your answers to one decimal place.)
| lower limit | |
| upper limit | |
| margin of error |
(d) Compare the margins of error for parts (a) through (c). As the
confidence levels increase, do the margins of error increase?
As the confidence level increases, the margin of error increases.As the confidence level increases, the margin of error decreases. As the confidence level increases, the margin of error remains the same.
(e) Compare the lengths of the confidence intervals for parts (a)
through (c). As the confidence levels increase, do the confidence
intervals increase in length?
As the confidence level increases, the confidence interval decreases in length.As the confidence level increases, the confidence interval remains the same length. As the confidence level increases, the confidence interval increases in length.
In: Math
Dana’s Ribbon World makes award rosettes. Following is
information about the company:
| Variable cost per rosette | $ | 1.20 |
| Sales price per rosette | 4.00 | |
| Total fixed costs per month | 2800.00 | |
Required:
1. Suppose Dana’s would like to generate a profit of $880.
Determine how many rosettes it must sell to achieve this target
profit. (Round your intermediate calculations to 2 decimal
places and final answer tothe
nearest whole number.)
|
2. If Dana’s sells 1,200 rosettes, compute its margin of safety in units, in sales dollars, and as a percentage of sales. (Round your Margin of Safety percentage to two decimal places (i.e. .1234 should be entered as 12.34%).
|
3. Calculate Dana’s degree of operating
leverage if it sells 1,200 rosettes. (Round your
intermediate calculations to 2 decimal places and final answer to 4
decimal places.)
|
4. Using the degree of operating leverage,
calculate the change in Dana’s profit if unit sales drop to 1,080
units. Confirm this by preparing a new contribution margin income
statement. (Round your intermediate calculations to 4
decimal places and final answer to 2 decimal places. (i.e. .1234
should be entered as 12.34%.))
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In: Accounting
| Dana’s Ribbon World makes award rosettes. Following is information about the company: |
| Variable cost per rosette | $ | 1.60 |
| Sales price per rosette | 3.00 | |
| Total fixed costs per month | 889.00 | |
| Required: | ||||||
| 1. |
Suppose Dana’s would like to generate a profit of $800. Determine how many rosettes it must sell to achieve this target profit. (Round your intermediate calculations to 2 decimal places and final answer up to next whole number.) |
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| 2. |
If Dana’s sells 1,100 rosettes, compute its margin of safety in units, in sales dollars, and as a percentage of sales. (Round your intermediate calculations, Margin of Safety in Dollars and percentage answers to 2 decimal places.) |
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|
| 3. |
Calculate Dana’s degree of operating leverage if it sells 1,100 rosettes. (Round your intermediate calculations to 2 decimal places and final answer to 4 decimal places.) |
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| 4. |
Using the degree of operating leverage, calculate the change in Dana’s profit if unit sales drop to 935 units. Confirm this by preparing a new contribution margin income statement. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.) |
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In: Accounting
1. Mortgage Analysis:
When giving housing loans, financial institutions check, whether applicants qualify for the loan. For example, your down payment should exceed a certain percentage of the property value and your monthly payments (mortgage, property taxes etc.) should be less than a certain percentage of household's gross (pre-tax) monthly income.
Using the following parameters as variable inputs, please develop a model, which addresses the questions at the bottom
Inputs:
|
Household annual pre-tax income |
$ 197,000 |
|
Household liquid assets available for down payment |
$ 210,000 |
|
House price: |
$899,000 |
|
Real estate (property) tax: |
1.2% |
|
Loan characteristics |
|
|
Maturity: |
30 years |
|
APR: |
4.15% |
|
Payment frequency: |
monthly |
|
Minimum down payment requirement: |
20% |
|
All house-related payments (mortgage, property taxes etc.) as a percentage of gross (pre-tax) income should not exceed |
28% |
Questions:
-Create loan amortization schedule (double check your calculations by using alternative methods to calculate payments).
-Should this household receive the loan? What is the maximum mortgage loan that can be given to this household?
-Now assume that you have purchased the house exactly 5 years ago and you get an offer to refinance into a new 30 year mortgage with 4.00% APR. The fixed cost of refinancing is a one-time fee of $10,000.
-Is it to your benefit to refinance?
-What factors influence your decision? (Make any additional assumptions you deem necessary.)
In: Accounting
The financial statements for Castile Products, Inc., are given below:
| Castile Products, Inc. Balance Sheet December 31 |
||||||
| Assets | ||||||
| Current assets: | ||||||
| Cash | $ | 21,000 | ||||
| Accounts receivable, net | 230,000 | |||||
| Merchandise inventory | 320,000 | |||||
| Prepaid expenses | 7,000 | |||||
| Total current assets | 578,000 | |||||
| Property and equipment, net | 850,000 | |||||
| Total assets | $ | 1,428,000 | ||||
| Liabilities and Stockholders' Equity | ||||||
| Liabilities: | ||||||
| Current liabilities | $ | 220,000 | ||||
| Bonds payable, 9% | 310,000 | |||||
| Total liabilities | 530,000 | |||||
| Stockholders’ equity: | ||||||
| Common stock, $5 per value | $ | 180,000 | ||||
| Retained earnings | 718,000 | |||||
| Total stockholders’ equity | 898,000 | |||||
| Total liabilities and stockholders’ equity | $ | 1,428,000 | ||||
| Castile Products, Inc. Income Statement For the Year Ended December 31 |
|||
| Sales | $ | 2,250,000 | |
| Cost of goods sold | 1,210,000 | ||
| Gross margin | 1,040,000 | ||
| Selling and administrative expenses | 590,000 | ||
| Net operating income | 450,000 | ||
| Interest expense | 27,900 | ||
| Net income before taxes | 422,100 | ||
| Income taxes (30%) | 126,630 | ||
| Net income | $ | 295,470 | |
Account balances at the beginning of the year were: accounts receivable, $230,000; and inventory, $280,000. All sales were on account. Assets at the beginning of the year totaled $1,060,000, and the stockholders’ equity totaled $675,000.
Required:
Compute the following: (For Requirements 1 to 4, enter your percentage answers rounded to 2 decimal places (i.e., 0.1234 should be entered as 12.34).)
1. Gross margin percentage.
2. Net profit margin percentage.
3. Return on total assets.
4. Return on equity.
5. Was financial leverage positive or negative for the year?
rev: 06_13_2017_QC_CS-91150
In: Accounting
Elasticity is a unit-free measure by using the ______ change and is a direction-free measure by using a ________ method.
Group of answer choices：
Magnitude: Mid-point
Magnitude: Slope
Percentage: Mid-point
Percentage: Slope
In: Economics
Question #3: Interest rates are quoted either as Annual Percentage Rate (APR) or Effective Annual Rate (EAR)
Required: What is the difference between an Annual Percentage Rate and an Effective Annual Rate?
In: Finance
Where does the square root of (1+1/n) factor come from in the prediction interval?
A tolerance interval includes two percentage values. What do the two percentage values represent?
In: Statistics and Probability