what is the photoelctric effect?

A car travels around a square course 10. km on a side starting at A. From A to B the car travels 30.km/hr, from B to C, 40. Km/hr, from C to D, 50. km/hr, and from D back to A at 60. km/hr. Calculate the average speed and the average velocity of the car. Which of these scenarios is most likely covered by the foreign policy of the United States? the opening of a Michigan automobile factory near the US border with Canada the closing of a US military base and withdrawal of troops from a European ally the research collaboration between a US university and a university in China the wrongful imprisonment of a US citizen while traveling in the Middle East Between June 30 and August 30,2011 , Greenacres has a population of 5,652 . The local health department has identified 88 existing cases of Hepatitis B on June 30 th . Then, 53 new cases of hepatitis B were recorded between July 1 19 and August 30 th . Between June 30 and August 30,2011 , Greenacres has a population of 5,652 . The local health department has identified 88 existing cases of Hepatitis B on June 30 th . Then, 53 new cases of hepatitis B were recorded between July 1 st and August 30 th . To parts 1A-C below, calculate and report your answer as a percentage (round final answer to the tenths place) and write it out as a full descriptive results sentence (this means you must include the who, where, and when components in every sentence). A. What is the point prevalence on June 30 th ? B. What is the period prevalence from June 30 th to August 30 th ? C. What is the cumulative incidence between July 1 st and August 30 th ? (From lecture 2.1) Suppose you buy a 1 million dollar house with a 20% deposit and pay off $b per fortnight. The following recurrence calculates the mortgage after n fortnightsXn = Xn1 + 0.002178Xn1 bwhere Xn denotes the dollar amount of the loan after n fortnights, and assumes the(current) national average 30-year fixed mortgage APR (yearly rate) of 5.820%.(a) What is the initial loan X1?(b) Determine the fixed points of this recurrence, and interpret these in terms of the loan and repayments.(c) For repayments of b = 2000, b = 3000, and b = 4000, determine the number of fortnights required for the loan to be payed off (i.e. the minimum value of n for which Xn 0) and the total amount payed. What can you conclude about the best way to pay off a loan? choose Apple Inc. and answer the questionExplain in detail the legal complexities of customs, security regulations and international political relationships and how they have an impact on companys transportation across international borders. 4. Which of the following persons was the first to recognize the correct geometric form of the orbits of the planets? a) Tycho Brahe b) Copernicus c) Ptolemy d) Kepler We know that the intersection of ideals is an ideal. Is the union of two ideals again an ideal? If your answer is no, give a counterexample. Physicians at a clinic gave what they thought were drugs to 850 asthma, ulcer, and herpes patients. Although the doctors later learned that the drugs were really placebos, 53 % of the patients reported an improved condition. Assume that if the placebo is ineffective, the probability of a patients condition improving is 0.490.49. For the hypotheses that the proportion of improving is 0.49 against that it is >0.49, find the p-value.P= _____________________ A Hiker is climbing a steep 12 slope. Her pedometer shows that shehas walked 1200 m along the slope.How much elevation has she gained? A hiker is climbing a steep 12 slope. Her pedometer shows that she has walked 1200 m along the slope. How much elevation has she gained? Express your answer with the appropriate units. Money market securities do not have which of the following characteristics? 1. Low trading costs 2. High price risk 3. Little default risk 4. Large denomination 5. No secondary market 6. A temporary "warehouse" for surplus funds 7. Not a good way to raise funding 8. A way to quickly take advantage of investment opportunities 9. High rate of return 10. Life greater than one year The record-setting jumping insect can leap at an angle of 60.0 above level ground and can reach a height of 60 centimeters (true story!). What must be the takeoff jump speed for this magical bug? a) 2 m/s b) 4 m/s c) 20 m/s d) 40 m/s A log is floating on swiftly moving water. A stone is dropped from rest from a 51.0m-high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 4.05 m/s, what is the horizontal distance between the log and the bridge when the stone is released? Number Units All but which of the following are factors affecting the maximum cash balances desired by a firm?a. the expected return from investment opportunitiesb. the transaction costs of making investmentsc. how quickly and cheaply a firm can raise cash when neededd. the availability of investment opportunities To find three values unknown in a separator system, we use dsolve('equation1,'equation 2 )=[T,K,q] . B diff('equation1,'equation 2 )=[T,K,q] solve('equation1,'equation 2 )=[T,K,q] .D Not of these What does "think globally but act locally" mean when a companyis considering going global with markets and/or production? Give anexample and explain in detail. what is the relationship between fluid flow and viscosity? The environmental incentive that activates the emotional and behavioral potential of the social need for achievement is: doing something well to show personal competence. having an impact on others. pleasing others and gaining their approval. having a warm, secure relationship. can someon help me asap Time Warner shares have a market capitalization of$40billion. The company is expected to pay a dividend of$0.25per share and each share trades for$30. The growth rate in dividends is expected to be8%per year. Also, Time Warner has$10billion of debt that trades with a yield to maturity of8%. If the firm's tax rate is25%, what is the WACC? A.7.85%B.8.27%C.7.03%D.9.09% (a) Write down mathematical expressions for the values of European call and put options on a given security at expiry, explaining any terms that you use. Also, sketch the pay-off diagram in each case, assuming that there are transaction costs. () (b) Sketch the pay-off diagrams for each of the following portfolios, assuming that there are transaction costs: i. Short one share and long one call and three puts both with strike price K; () ii. Short one call with strike price 2K and short one call with strike price 4K, and long one call with strike price K; and (6 marks) iii. Short one call and short two puts both with strike price K and long one share. () (c) A portfolio consists of the following: long: 100 shares; 300 puts with strike price 115p;200 puts with strike price 100p; and short: 400 calls with strike price 110p;210 calls with strike price 195p. Assuming that the options all have the same expiry date, find the value of the portfolio at expiry if the share price is: i. 185p; ii. 195p; iii. 200p; or iv. 215p. ()