Search & Filtering
Create a project to model students with firstname, lastname, age, gender and student number. Create two constructors, one to be used as default and another to include all attributes. Add a class attribute to keep count of all registered students. Use the class attribute to generate student numbers with the following format 22201XYZ, where XYZ is the current count provided by the class attribute. Implement the respective getters and setters for each attribute. Now given a list of student information create the respective objects and print out their details see samples below, make sure the student class has a toString method.
Sample Run1
2
John Doe 29 M
Kelly Daniela 40 F
Output1:
Full names : John Doe
Age : 29
Gender : M
Student Number : 22201001
Full names : Kelly Daniela
Age : 40
Gender : F
Student Number : 22201002
The Smart Treasure Fund was created for Samson after he lost his leg in a battle with pirates. The fund has undertaken to pay him R1 200 000 now. Samson prefers to receive three payments: one three years from now; one twice the size of the first payment six years from now, and one four times the size of the first payment ten years from now. The amount of money to the nearest rand that Samson can expect to receive six years from now if the interest rate applicable is 8,6% per year, compounded quarterly, will be
During a test on a boiler the following data were recorded: Pressure = 1.7 MPa Steam temperature at exit = 240ºC Steam flow rate = 5.4 tonnes/hour Fuel consumption = 400 kg/hour Lower calorific value of fuel = 40 MJ/kg Temperature of feedwater = 38ºC Specific heat capacity of superheated steam = 2100 J/kg.K Specific heat capacity of liquid water = 4200 J/kg.K. Calculate: 5.1 Efficiency of the boiler. 5.2 Equivalent evaporation (EE) of the boiler [91 %; 16.1]
A boiler produces 6 tonnes/hour of steam at a pressure of 1.8 MPa and a temperature of 250ºC. Feedwater enters at a temperature of 39ºC. At exit from the economizer part of the boiler the temperature is 72ºC. At exit from the evaporator part of the boiler the steam is 90 % dry. Energy is supplied by 650 kg of coal per hour, which has a calorific value of 36 MJ/kg. The A/F ratio is 25 : 1. The temperature of the flue gas at entry to the economizer part of the boiler is 430ºC. The average specific heat at constant pressure of the flue gas in the economizer is 1045 J/kg.K. 4.1 Calculate the efficiency of the boiler. [70.5 %] 4.2 Draw up an energy balance, on a kJ/kg coal basis, with percentages of the total energy supplied. [economizer 3.6 %, evaporator 59 %, superheater 8 %, other 29.4 %]
If the reflective Index of a medium is 1.5cm and the angle of Incidence=60 calculate the angle of refraction
Three years ago Lilly borrowed R10 000 from Faith on condition that she should pay her back two years from now. She also owes Faith R6 000 payable five years from now. The applicable interest rate for both transactions is 13,75% per year, compounded every six months. After considering her payback schedule, Lilly asks Faith if she can pay her R9 000 now and the rest in four years' time. She agrees on condition that the new agreement will run from now and that an interest rate of 16,28% per year, compounded monthly, will be applicable from now. The amount that Lilly will have to pay Faith four years from now is
An interest rate of 14,90% per year, compounded every 3 months, is equivalent to a weekly compounded interest rate of
Discuss free radical reaction mechanism in methane chlorination as an example of
substitution reactions of alkanes
Three years ago Lilly borrowed R10 000 from Faith on condition that she should pay her back two years from now. She also owes Faith R6 000 payable five years from now. The applicable interest rate for both transactions is 13,75% per year, compounded every six months. After considering her payback schedule, Lilly asks Faith if she can pay her R9 000 now and the rest in four years' time. She agrees on condition that the new agreement will run from now and that an interest rate of 16,28% per year, compounded monthly, will be applicable from now. The amount that Lilly will have to pay Faith four years from now is
a. which diagram(s) shows synapsis? (1 Mark)
b. Which diagram(s) starts with a haploid cell? (1 Mark)
c. In which diagram did segregation of both chromosome pairs occur? (1 Mark)
d. What phenomenon occurred in division # IV? (1 Mark)
