1) Consider the following class (given as a class diagram) Person - in.docx

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1) Consider the following class (given as a class diagram) Person ? int age ? String name + Person(String, int) + Person() + void speak() Among the following statements, indicate which are valid and which are invalid. A valid statement is a statement that compiles and executes in any class, which has access to the Person class. If a statement is invalid, explain why. Assume that the variables p and q are of type Person and have been correctly initialized before being used. a) Person p = new Person(â€œMaryjaneâ€, 30); b) p.speak(); c) p.sleep(); d) Person p = new Person; e) Person.speak(); f) Person p = new Speak(); g) p.age = 25; h) System.out.println(â€œp.nameâ€); i) System.out.println(p.name); j) p=q; k) new Person(â€œHuyâ€,26).speak(); Solution public class Person { int age; String name; public static void main(String[] args) { Person p = new Person(\"Maryjane\", 30); Person q = new Person(\"Maryjane\", 30); p.speak(); p.sleep(); //Person p = new Person; // Person.speak(); //Person p = new Speak(); p.age = 25; System.out.println(\"p.name\"); System.out.println(p.name); p=q; new Person(\"Huy\",26).speak(); } Person(){} public Person(String string, int i) { // TODO Auto-generated constructor stub } void sleep(){ } void speak(){ } } invalid statement Person p = new Person; Person.speak(); Person p = new Speak(); .

Formation

Solution
public class Person {
int age;
String name;
public static void main(String[] args)
{
Person p = new Person("Maryjane", 30);
Person q = new Person("Maryjane", 30);
p.speak();
p.sleep();
//Person p = new Person;
// Person.speak();
//Person p = new Speak();
p.age = 25;
System.out.println("p.name");
System.out.println(p.name);
p=q;
new Person("Huy",26).speak();
}
Person(){}

public Person(String string, int i) {
// TODO Auto-generated constructor stub
}
void sleep(){
}
void speak(){
}
}
invalid statement
Person p = new Person;
Person.speak();
Person p = new Speak();

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1) Is technology the critical driver of globalization? 2) What is the nature of this arguement conceived by: liberlism, mercantilism, and marxism? Solution Technological developments are considered as the main facilitator and also driving force of most of the globalization processes. Technology is defined as the socialized knowledge of producing goods and services. We could describe the term technology with five important elements: production, knowledge, instruments, possession and change. The definition of technology as a socialized knowledge can be conceived better with these elements. We shall look through them: Technology has something to do with production (of the goods and services). We need technology to produce something either goods (ex: television set, cars etc.) or service (ex: security, teaching etc.) Technology enhances our capacity to produce. Technology has a relationship with knowledge . Technology is an outcome of intellectual activities. Therefore technology is a type of an intellectual property. Nowadays technology is developed through research and development institutions as integral parts of several universities. Technology has a connect with with instruments . Instruments are considered the extensions of the human body, whenever an instrument is used there is technology involved. The instruments show the usage of technology by human beings. Instruments are mostly physical like computers, vacuum cleaners, but sometimes there are immaterial instruments like databases in computer programming. Technology has to do with possession . Those people that possess technology also control it. Controlling technology has something to do with economics and politics. Thus, we speak of technologically rich and poor countries as well as the struggle among them usually in the forms of patents, transfers and protection of intellectual rights. Technology has to do with change . Due to technology, the world has changed drastically. Many of the innovations from the technological advances have important effects on lives of peoples of the world, that has witnessed radical changes more so after 1960 .

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1) describe how temperature influenced what materials condensed from the nebular cloud. 2) compare and contrast the composition of the inner and outer planets 3) explain the frost line and the influence it has on the formation of planets (in any solar system). 4) explain why our solar system has rocky inner planets and gaseous outer planets and identify the most metal-rich planet in the solar system 5) explain the occurrence of Hot Jupiters Solution Solution: 1) During the early stage of evolution , soon after the completion of the cloud collapse , nebula is hot . The mass accretion rate from the nebula onto the star is high . The equilibrium condensation temperature of the Silicates and metal comprises 90 % (by mass) of the condensable solids.The temperature decreases away from the mid plane and away from the Sun. The accretion of gas onto the sun leads to the dissipation of energy . The nebula is heated internally due to this . Condensation metals include Iron , Nickel and Aluminum . Most metals condense into solids at temperatures of 1000 - 1600 K . Metals made up <0.2% of the Nebular mass. 2) The Inner planets are Mercury , Venus ,Earth and Mars. They are all solid and rocky and similar to Earth . Inner Planets are also called Terrestrial Planets . Inner planets are warmer as these are closer to Sun . Outer planets are called Jovian Planets and are mainly Gaseous in nature . Outer planets are colder as they are farther away from the Sun. All Outer planets have rings . 3) Frost line is also called the Snow line or Ice line . It is the radial position of condensation or evaporation front which varies over time . With reference to the formation of the planets, it is the distance in the Solar Nebula from the central protostar where it is very cold to where the volatile compounds like water , Ammonia , CO2 ,CO condense into solid ice grains. 4) The temperature of the early solar system explains the Terrestrial nature of the inner planets . As the gases coalesced to form the proto Sun the temperature in the inner SOlar system rose . The temperatures rose to about 2000 K , so only substance which have very high melting points remained solid . That is why the inner solar system planets are all rocky . 5) Planetary migration is responsible for the formation of hot Jupiters. These are formed in the outer regions and then migrate to the inner regions of the Solar system . It forms beyond the frost line , from rock , ice and gases due to core accretion method of planetary formation . .

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where heat is transfer high in conduction or convection where heat is transfer high in conduction or convection Solution CONDUCTION-- Conduction is the transfer of heat between substances that are in direct contact with each other. The better the conductor, the more rapidly heat will be transferred. Metal is a good conduction of heat. Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them. This then continues and passes the energy from the hot end down to the colder end of the substance. CONVECTION-- Thermal energy is transferred from hot places to cold places by convection. Convection occurs when warmer areas of a liquid or gas rise to cooler areas in the liquid or gas. Cooler liquid or gas then takes the place of the warmer areas which have risen higher. This results in a continous circulation pattern. Water boiling in a pan is a good example of these convection currents. Another good example of convection is in the atmosphere. The earth\'s surface is warmed by the sun, the warm air rises and cool air moves in. Hence more heat is transferred by CONDUCTION because of the direct contact. .

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When the sender and the recipient can transmit data to each other over an unsecured or monitored link by encrypting messages without worrying that their communications are being monitored, it is called: authentication confidentiality integrity nonrepudiation Solution option B confidentiality is correct option. Confidentiality : By encryptin messages, the sender and the recipient can transmit data to each other over an unsecured or monitored link without worrying that their communucations are monitored. Inyegrity : The communication parties can also be sure that their data has not been modified while in transit. This is achieved by the hashing function. Authentication : Because the message uses the private key that only the owners know and have access to, the recipient of the message knows for a fact that it was sent by the person after the message was decrypted by sender\'s public key. Nonrepudiation : The sender cannot claim that the message did not originate from his or her computer or that the contents of the message were changed in transit. You cannot denied this message is not from your computer. .

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When the equity method is applied, what disclosures should be made in the investor\'s financial statements? Solution An accounting technique used by firms to assess the profits earned by their investments in other companies. The firm reports the income earned on the investment on its income statement and the reported value is based on the firm\'s share of the company assets. The reported profit is proportional to the size of the equity investment. This is the standard technique used when one company has significant influence over another. When a company holds approximately 20-25% or more of another company\'s stock, it is considered to have significant control, which signifies the power that a company can exert over another company. This power includes representation on the board of directors, partaking in company policy development and the interchanging of managerial personnel. If a firm owns 25% of a company with a $1 million net income, that firm would report earnings of $250,000. When the equity method is used to account for ownership in a company, the investor records the initial investment in the stock at cost, and then that value is periodically adjusted to reflect the changes in value due to the investor\'s share in the company\'s income or losses. .

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When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown? Fe2+ + PbO2 Fe3+ + Pb2+ Water appears in the balanced equation as a (reactant, product, neither) ? with a coefficient of . (Enter 0 for neither.) ? How many electrons are transferred in this reaction? Solution Balancing of redox equation--- --> break into two half-cell-- O: Fe2+ --> Fe3+ R: PbO2 --> Pb2+ --> Balance atoms other than O and H. Here already balance. --> Balance O with water and then water with H+-- O: Fe2+ --> Fe3+ R: PbO2 + 4H+ --> Pb2+ + 2H2O --> Now, Balance charge by e- -- O: Fe2+ --> Fe3+ + e- R: PbO2 + 4H+ + 2e- --> Pb2+ + 2H2O --> multiply first equation by 2 and then addup--- 2Fe 2+ + PbO 2 + 4H + ? 2Fe 3+ + Pb 2+ + 2H 2 O --> water appears as a product here with coefficient 2. --> 2 electrons are transferred in the reaction. if you have any query comment. if satisfied please rate it.. thanks.. .

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When should a company disclose extraordinary items on their income statement? Why do you think that this disclosure is made after income from operations on the income statement? Solution An extraordinary item is an event which is not related to ordinary activity of the company.It is unlikely to recur in the forseeable future.It is an abnormal event. E.g are Effects of a strike, Abandonment of property, Intangible assets. Company should disclose extraordinary item if it is material. Materiality is considered in relation to Income before extraordinary items, trend of annual earnings before extraordinary items etc. It is disclosed after income from operations because it is not a part of normal activities of company. Purpose of making such a disclosure is to present a true and fair view i.e. the users of financial statemnets can analyse the items which are totally unrelated to the operational and Financial results of the business. Extraordinary items should be presented separately, and after the results of ordinary operations in the income statement, along with disclosure of the nature of the items, and net of related income taxes. .

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