problem 1. You notice that a string fixed at both ends produces standing waves at 440 Hz and 660 Hz, but not at any frequency in between.
a.What harmonics do these two frequencies correspond to?
b. What is the fundamental frequency?
problem 2. A bass clarinet can be modeled as a 120-cm-long tube closed at one end. A musician starts playing at room temperature (vsound = 343 m/s), but the temperature soon increases to where the speed of sound is 352 m/s. What is the change in the fundamental frequency?
problem 3. Three successive resonance frequencies in an organ pipe are 1310, 1834, and 2358 Hz. What is the length of the pipe?
In: Physics
The comparative balance sheet of Yellow Dog Enterprises Inc. at December 31, 20Y8 and 20Y7, is as follows:
1 |
Dec. 31, 20Y8 |
Dec. 31, 20Y7 |
|
2 |
Assets |
||
3 |
Cash |
$146,480.00 |
$179,640.00 |
4 |
Accounts receivable (net) |
225,010.00 |
241,920.00 |
5 |
Merchandise inventory |
321,600.00 |
298,870.00 |
6 |
Prepaid expenses |
13,030.00 |
10,420.00 |
7 |
Equipment |
654,380.00 |
537,900.00 |
8 |
Accumulated depreciation |
(169,970.00) |
(133,130.00) |
9 |
Total assets |
$1,190,530.00 |
$1,135,620.00 |
10 |
Liabilities and Stockholders’ Equity |
||
11 |
Accounts payable (merchandise creditors) |
$250,960.00 |
$236,720.00 |
12 |
Mortgage note payable |
0.00 |
335,410.00 |
13 |
Common stock, $10 par |
75,000.00 |
25,000.00 |
14 |
Paid-in capital: Excess of issue price over par—common stock |
440,000.00 |
310,000.00 |
15 |
Retained earnings |
424,570.00 |
228,490.00 |
16 |
Total liabilities and stockholders’ equity |
$1,190,530.00 |
$1,135,620.00 |
Additional data obtained from the income statement and from an examination of the accounts in the ledger for 20Y8 are as follows:
A. | Net income, $348,560. |
B. | Depreciation reported on the income statement, $82,480. |
C. | Equipment was purchased at a cost of $162,120 and fully depreciated equipment costing $45,640 was discarded, with no salvage realized. |
D. | 10,000 shares of common stock were issued at $18 for cash. |
E. | The mortgage note payable was not due for six years, but the terms permitted earlier payment without penalty. |
F. | Cash dividends declared and paid, $152,480. |
Prepare a statement of cash flows, using the indirect method of presenting cash flows from operating activities. Refer to the Labels and Amount Descriptions list provided for the exact wording of the answer choices for text entries. Be sure to complete the heading of the statement. Use the minus sign to indicate cash out flows, cash payments, decreases in cash, or any negative adjustments.
Labels and Amount Descriptions |
|
Cash used for dividends | |
Cash used for equipment | |
Cash used for merchandise | |
Cash used for purchase of land | |
Cash used to retire mortgage note payable | |
Cash from customers | |
Cash from sale of common stock | |
December 31, 20Y8 | |
Decrease in cash | |
Decrease in merchandise inventory | |
Decrease in accounts payable | |
Decrease in accounts receivable | |
Decrease in prepaid expenses | |
Depreciation | |
For the Year Ended December 31, 20Y8 | |
Gain on disposal of equipment | |
Gain on sale of investments | |
Increase in accounts payable | |
Increase in accounts receivable | |
Increase in cash | |
Increase in merchandise inventory | |
Increase in prepaid expenses | |
Loss on disposal of equipment | |
Loss on sale of investments | |
Net cash flow from financing activities | |
Net cash flow from investing activities | |
Net cash flow from operating activities | |
Net cash flow used for financing activities | |
Net cash flow used for investing activities | |
Net cash flow used for operating activities | |
Net income | |
Net loss |
In: Accounting
Describe what policing enforcement methods that would be most effective at reducing the frequency or severity of these offenses. Include discussion of any types of CPTED concepts such as alley gating, defensible space or others that might be also employed to deter or mitigate these types of offenses.
In: Psychology
In: Economics
Using criminological terms and concepts describe a hypothetical crime problem in a specific area or jurisdiction type.
In: Psychology
In: Physics
In: Economics
should babies/young children’s IQ be tested before starting kindergarten? Explain. Based on the results of the IQ testing, would it be fair to place some young children in more advanced or remedial classes based on the results? Why or why not? Based on the chapter, do you believe such testing might result in disparate treatment or in identifying children as potential offenders or as being feeble-minded? Explain.
In: Psychology
1.16 [1pt] Consider an infinite non-conducting plane having a charge density of 1 C/m^2. Sketch electric field lines and indicate the value of electric field 1 m away from the plane
1.16 ANSWER
1.17 [1pt] Let’s add a point charge of-1C, at a distance 1 m from the plane in problem 1.18. What would be the force onto the charge?
1.17 ANSWER
1.18 [2pt] How much work will it take to remove the point charge in 1.17 from where it was infinitely far away from the plain. Explain your answer to the best of your knowledge.
1.18 ANSWER
Consider a conducting sheet with dimensions 1m by 1m by 1mm. A charge of 1 C was deposited into it, assume it is spread uniformly along the surface.
1.19 [1pt] What is electric field inside the sheet?
1.19 ANSWER
In: Physics
A cylinder with rotational inertia I1 = 2.6 kg · m^2 rotates clockwise about a vertical axis through its center with angular speed ω1 = 5.8 rad/s. A second cylinder with rotational inertia I2 = 1.3 kg · m2 rotates counterclockwise about the same axis with angular speed ω2 = 6.6 rad/s. If the cylinders couple so they have the same rotational axis, what is the angular speed of the combination (in rad/s)?
What percentage of the original kinetic energy is lost to friction?
In: Physics
What do you say about the differences and similarities between Turkish Central Bank (TCMB) and The US Fed?
In: Economics
You need a 25-year, fixed-rate mortgage to buy a new home for $210,000. Your mortgage bank will lend you the money at a 7.6 percent APR for this 300-month loan. However, you can afford monthly payments of only $850, so you offer to pay off any remaining loan balance at the end of the loan in the form of a single balloon payment.
How large will this balloon payment have to be for you to keep your monthly payments at $850?
Multiple Choice
$618,766.95
$95,983.79
$663,420.23
$637,904.07
$76,490.22
In: Finance
Firm X is the only firm in its industry. Currently, Firm X charges $75 per unit, a price well in excess of its marginal cost of $5 per unit, and earns $70 million per year in profit. According to a trusted source, the manager of Firm X learned that a new firm is contemplating entering the market. This would reduce its profit to $40 million per year. If Firm X expanded its output and lowered its price to $50, the entrant would find it unprofitable to enter the market, and Firm X would earn profits of $50 million per year for the indefinite future. Explain and show your work:
a. What pricing strategy is the manager of Firm X considering?
b. If Firm X was able to credibly commit to maintain a price of $50, would it be a profitable strategy? Explain.
In: Economics
Analyze and compare the four market structures with respect to their characteristics (perfect competition,oligopoly,monopolistic competition and monopoly).
illustrate with graphs
In: Economics
You are part of the water supply engineering team of your council. Your team is working on a certain part of cast iron piping of a water distribution system involving a parallel section. Both parallel pipes have a diameter of 30 cm, and the flow is fully turbulent. One of the branches (pipe A) is 1000 m long while the other branch (pipe B) is 3000 m long. If the flow rate through pipe A is 0.4 m3/s, determine the flow rate through pipe B and the head loss in pipe B. Disregard minor losses. Consider the water temperature to be 15°C. Assume that the flow is fully turbulent (i.e. the friction factor is independent of Reynolds number).
In: Civil Engineering