OC userin Chemistry·21 Nov 201799. Find the velocity of an electron emitted by a metal with a threshold frequency of 2.25 X 1014s when it is exposed to visible light of wavelength 5.00 x 10-?m.
OC userin Physics·21 Nov 201725.39. Consider the circuit of Fig. E25.30. (a) What is the total rate at which electrical energy is dissipated in the 5.0-1 and 9.0-12 resistors? (b) What is the power output of the 16.0-V battery? (c) At whatrate is electrical energy being converted to other forms in the 8.0-V battery? (d) Show that the power output of the 16.0-V battery equals the overall rate of consumption of electrical energy in the rest of the circuit.
OC userin Physics·21 Nov 20171.58. Two ropes in a vertical plane exert equal-magnitude forces on a hanging weight but pull with an angle of 72.0° be- tween them. What pull does each rope exert if their resultant pull is 372 N directly upward?
OC userin Chemistry·21 Nov 2017Q10. The rate constant for a reaction at 25.0°C is 0.010s-1, and its activation energy is 35.8 kJ. Find the rate constant at 50.0°C a) 0.021 s-1 b) 0.010s-1 c) 0.0033s-1 d) 0.031 s-1
OC userin Accounting·21 Nov 20172-4 Distinguish between (a) a variable cost, (b) a fixed cost, and (c) a mixed cost.
OC userin Accounting·20 Nov 2017EXERCISE 5-12 Multiproduct Break-Even Analysis (L05-9] Olongapo Sports Corporation distributes two premium golf balls—the Flight Dynamic and the Sure Shot. Monthly sales and the contribution margin ratios for the two products follow: Product Flight Dynamic Sure Shot $150,000 $250,000 80% 36% Total $400,000 Sales ......... CM ratio ....... Fixed expenses total $183,750 per month. Required: 1. Prepare a contribution format income statement for the company as a whole. Carry computa- tions to one decimal place. 2. Compute the break-even point for the company based on the current sales mix. 3. If sales increase by $100,000 a month, by how much would you expect net operating income to increase? What are your assumptions?
OC userin Physics·20 Nov 20175.23 . CP CALC A 2.00-kg box is moving to the right with speed 9.00 m/s on a horizontal, frictionless surface. At t = 0 a horizontal force is applied to the box. The force is directed to the left and has magnitude Ft) = (6.00 N/s?)t2. (a) What distance does the box move from its position at t = 0 before its speed is reduced to zero? (b) If the force continues to be applied, what is the speed of the box at t = 3.00 s?
OC userin Chemistry·18 Nov 2017c. What are the posible values of mykezeschvalme og 60. What are the possible values of my for each value of I? a. O b. 1 c. 2 d. 3
OC userin Physics·19 Nov 201763. Which metal cation is the best oxidizing agent? a. Pb2+ b. Cr3+ c. Fe2+ d. Sn2+
OC userin Physics·18 Nov 20175.35 CP Stopping Distance. (a) If the coefficient of kinetic friction between tires and dry pavement is 0.80, what is the short- est distance in which you can stop a car by locking the brakes when the car is traveling at 28.7 m/s (about 65 mi/h)? (b) On wet pavement the coefficient of kinetic friction may be only 0.25. How fast should you drive on wet pavement to be able to stop in the same distance as in part (a)? (Note: Locking the brakes is not the safest way to stop.)
OC userin Accounting·17 Nov 2017EXERCISE 7-14 Calculating and Interpreting Activity-Based Costing Data [LO7-3, L07-4] Hiram's Lakeside is a popular restaurant located on Lake Washington in Seattle. The owner of the restaurant has been trying to better understand costs at the restaurant and has hired a student intern to conduct an activity-based costing study. The intern, in consultation with the owner, identified three major activities and then completed the first stage allocations of costs to the activity cost pools. The results appear below. Activity Cost Pool Activity Measure Total Cost Total Activity Serving a party of diners ........ Serving a diner ......... Serving drinks ..... Number of parties served Number of diners served Number of drinks ordered $33,000 $138,000 $24,000 6,000 parties 15,000 diners 10,000 drinks The above costs include all of the costs of the restaurant except for organization-sustaining costs such as rent, property taxes, and top-management salaries. A group of diners who ask to sit at the same table are counted as a party. Some costs, such as the costs of cleaning linen, are the same whether one person is at a table or the table is full. Other costs, such as washing dishes, depend on the number of diners served. Prior to the activity-based costing study, the owner knew very little about the costs of the restaurant. She knew that the total cost for the month (including organization-sustaining costs) was $240,000 and that 15.000 diners had been served. Therefore, the average cost per diner was $16. Required: 1. According to the activity-based costing system, what is the total cost of serving each of the following parties of diners? a. A party of four diners who order three drinks in total. b. A party of two diners who do not order any drinks. c. A lone diner who orders two drinks. 2. Convert the total costs you computed in (1) above to costs per diner. In other words, what is the average cost per diner for serving each of the following parties? a. A party of four diners who order three drinks in total. b. A party of two diners who do not order any drinks. c. A lone diner who orders two drinks. 3. Why do the costs per diner for the three different parties differ from each other and from the overall average cost of $16 per diner?
OC userin Physics·18 Nov 2017Q8.4 A car has the same kinetic energy when it is traveling south at 30 m/s as when it is traveling northwest at 30 m/s. Is the mo- mentum of the car the same in both cases? Explain.
OC userin Accounting·17 Nov 2017EXERCISE 2-1 Identifying Direct and Indirect Costs (L02-1] Northwest Hospital is a full-service hospital that provides everything from major surgery and emergency room care to outpatient clinics. Required: For each cost incurred at Northwest Hospital, indicate whether it would most likely be a direct cost or an indirect cost of the specified cost object by placing an X in the appropriate column. Cost Direct Cost Indirect Cost Ex. Catered food served to patients 1. The wages of pediatric nurses 2. Prescription drugs 3. Heating the hospital 4. The salary of the head of pediatrics 5. The salary of the head of pediatrics 6. Hospital chaplain's salary 7. Lab tests by outside contractor 8. Lab tests by outside contractor Cost Object A particular patient The pediatric department A particular patient The pediatric department The pediatric department A particular pediatric patient A particular patient A particular patient A particular department
OC userin Chemistry·16 Nov 201778. Consider this two-step mechanism for a reaction: NO2(g) + Cl2(8) CINO2(8) + C1(8) Slow NO2(g) + CI(g) , CINO2(8) Fast a. What is the overall reaction? b. Identify the intermediates in the mechanism. c. What is the predicted rate law?