OC userin Physics·26 Nov 2017Q5.11 In a world without friction, which of the following activi- ties could you do (or not do)? Explain your reasoning. (a) Drive around an unbanked highway curve; (b) jump into the air; (c) start walking on a horizontal sidewalk; (d) climb a vertical ladder; (e) change lanes while you drive.
OC userin Chemistry·25 Nov 201766. Determine whether each transition in the hydrogen atom corresponds to absorption or emission of energy. a. n-3-on=1 b. n = 22n = 4 C. n = 4 n = 3
OC userin Chemistry·27 Nov 2017Q1. Which property of carbon is related to its ability to form a large number of compounds? a) its tendency to form four covalent bonds b) its ability to form double and triple bonds c) its tendency to catenate d) all of the above
OC userin Accounting·26 Nov 2017EXERCISE 15-8 Selected Financial Ratios (L015-2, LO15-3, L015-4] The financial statements for Castile Products, Inc., are given below: Castile Products, Inc. Balance Sheet December 31 Assets Current assets: Cash.. Accounts receivable, net ................ Merchandise inventory ................. Prepaid expenses ..................... Total current assets ...................... Property and equipment, net ............... Total assets $ 6,500 35,000 70,000 3,500 115,000 185,000 $300,000 $ 50,000 80,000 130,000 Liabilities and Stockholders' Equity Liabilities: Current liabilities .......... Bonds payable, 10% .......... Total liabilities ................. Stockholders' equity: Common stock, $5 per value ............. Retained earnings .... Total stockholders' equity ................. Total liabilities and equity ................. $ 30,000 140,000 170,000 $300,000 Castile Products, Inc. Income Statement For the Year Ended December 31 Sales ..... Cost of goods sold... Gross margin Selling and administrative expenses......... Net operating income ....... Interest expense......................... Net income before taxes .................. Income taxes (30%) Net income ............ ................ $420,000 292,500 127,500 89,500 38,000 8,000 30,000 9,000 $ 21,000 Account balances at the beginning of the year were: accounts receivable, $25,000; and inven tory, $60,000. All sales were on account. EXERCISE 15-10 Financial Ratios for Assessing Market Performance [LO15-6] Refer to the financial statements for Castile Products, Inc., in Exercise 15-8. In addition to the data in these statements, assume that Castile Products, Inc., paid dividends of $2.10 per share during the year. Also assume that the company's common stock had a market price of $42 at the end of the year and there was no change in the number of outstanding shares of common stock during the year. Required: Compute financial ratios as follows: 1. Earnings per share. 2. Dividend payout ratio. 3. Dividend yield ratio. 4. Price-earnings ratio. 5. Book value per share.
OC userin Physics·26 Nov 2017Figure P5.65 5.65 ** A solid uniform 45.0-kg ball of diameter 32.0 cm is supported against a vertical, frictionless wall by a thin 30.0-cm wire of negligible mass (Fig. P5.65). (a) Draw a free-body diagram for the ball, and use the diagram to find the tension in the wire. (b) How hard does the ball push against the wall? 30.0 cm
OC userin Chemistry·25 Nov 20172. In electrochemistry, what kind of reaction can be driven by electricity?
OC userin Physics·24 Nov 201725.37 . European Light Bulb. In Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States. Therefore a "100-W European bulb would be intended for use with a 220-V potential difference (see Problem 25.36). (a) If you bring a "100-W" European bulb home to the United States, what should be its U.S. power rating? (b) How much current will the 100-W European bulb draw in normal use in the United States?
OC userin Physics·24 Nov 2017Q5.12 When you stand with bare feet in a wet bathtub, the grip feels fairly secure, and yet a catastrophic slip is quite possible. Explain this in terms of the two coefficients of friction.
OC userin Chemistry·23 Nov 201796. Consider the reaction in which HCl adds across the double bond of ethene: | HCl + HỌC=CH2 – HẠC-CHÚC The following mechanism, with the accompanying energy dia- gram, has been suggested for this reaction: Step 1 HCl + H2C=CH2 —> H2C=CH2+ + Clº Step 2 H2C=CH2 + Cl - H3C-CH_CI +---E Energy A rxn - - -- - - C=C + HCI H-CC - Reaction progress- a. Based on the energy diagram, determine which step is rate limiting. b. What is the expected order of the reaction based on the pro- posed mechanism? c. Is the overall reaction exothermic or endothermic?
OC userin Chemistry·23 Nov 201781. Suppose that a catalyst lowers the activation barrier of a reac- tion from 125 kJ/mol to 55 kJ/mol. By what factor would you expect the reaction rate to increase at 25 °C? (Assume that the frequency factors for the catalyzed and uncatalyzed reactions are identical.)
OC userin Chemistry·25 Nov 2017110. Determine if HNO3 can dissolve each metal sample. If it can, write a balanced chemical reaction showing how the metal dissolves in HNO3 and determine the minimum volume of 6.0 M HNO3 required to completely dissolve the sample. a. 5.90 g Au b. 2.55 g Cu c. 4.83 g Sn
OC userin Physics·24 Nov 20171.17 .. BIO A rather ordinary middle-aged man is in the hospi- tal for a routine checkup. The nurse writes "200" on the patient's medical chart but forgets to include the units. Which of these quantities could the 200 plausibly represent? The patient's (a) mass in kilograms; (b) height in meters; (c) height in centime- ters; (d) height in millimeters; (e) age in months.
OC userin Chemistry·22 Nov 201732. Consider the reaction: NO2(g) — NO(g) + O2(8) The tabulated data were collected for the concentration of NO2 as a function of time: Time (S) [NO2] (M) 1.000 10 0.951 0.904 0.860 0.818 SOR 0.778 0.740 0.704 80 0.670 90 0.637 100 0.606 a. What is the average rate of the reaction between 10 and 20 s? Between 50 and 60 s? b. What is the rate of formation of O, between 50 and 60 s?
OC userin Accounting·21 Nov 2017PROBLEM 2-17 High-Low Method; Predicting Cost [LO2-4, LO2-5] Sawaya Co., Ltd., of Japan is a manufacturing company whose total factory overhead costs fluctu- ate considerably from year to year according to increases and decreases in the number of direct labor-hours worked in the factory. Total factory overhead costs at high and low levels of activity for recent years are given below: Level of Activity High Direct labor-hours ................. Total factory overhead costs ........ Low 50,000 $14,250,000 75,000 $17,625,000 The factory overhead costs above consist of indirect materials, rent, and maintenance. The com- pany has analyzed these costs at the 50,000-hour level of activity as follows: Indirect materials (variable) ...... Rent (fixed) .... Maintenance (mixed) ...... Total factory overhead costs ..... $ 5,000,000 6,000,000 3,250,000 $14,250,000 To have data available for planning, the company wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $17,625,000 factory overhead cost at the high level of activity con- sists of maintenance cost. (Hint: To do this, it may be helpful to first determine how much of the $17,625,000 consists of indirect materials and rent. Think about the behavior of variable and fixed costs!) 2. Using the high-low method, estimate a cost formula for maintenance. 3. What total factory overhead costs would you expect the company to incur at an operating level of 70,000 direct labor-hours?