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The perimeter of a triangle is 60cm. Find the length of the sides of the triangle which gives a maximum area.
Suppose you have to enter five customers in a bank. The bank counter comprises of three service desk so three rows and three columns were made. Write a C++ program to provide service for customers according to row and column. First customer will stand in the first row first column, then the next customer in the first row second column and so on. Create a function which takes total number of customers as input as an argument and display the seating plan using another function.
Two parallel straight wires 53.0 cm apart carry currents in opposite directions. Current = 10.0 A is out of the page, and /2 = 8.0 A is into the page. Determine the magnitude and direction of the magnetic field halfway between the two wires.
A piano of mass 350 kg moved up a rough plane which is inclined to the horizontal ground at 25° as shown in Figure 3. It is pushed by a man with force of magnitude 1700 N parallel to the plane. The coefficient of frictional force for the surface is 0.30. After the piano has moved through 3.5 m, calculate the work done by each force acting on the piano and the net work done on the piano.
Determine the area under the standard normal distribution curve between z=1.15 and z=-1.85
Using ArrayList create a book borrowing system. Create ListBook.txt that list all the book information such as bookId, bookTitle, bookAuthor, bookGenre.
- Display all the book available from ListBook.txt
- User can search the book that want to borrow by bookId or bookTitle
- User can sort the book by bookGenre
- count and display how many book user borrow
- display the expected time the user should returned the book
Imagine you are developing a software system that requires users to enter their own passwords.
Your software requires that user’s password meet the following criteria:
The password should be at least eight characters long.
The password should contain at least one uppercase and at least one lowercase letter.
The password should have at least one special character.
Write a program that asks for a password and then verifies that it meets the stated criteria. If it
doesn’t, the program should display a message telling the user why.
A natural gas-fired boiler operates with 20% excess air. Air is fed at 25 °C and contains 21% O2 and 79% N2 on a volume basis. Natural gas composition: 92.6% CH4, 3.6% C2H6, 0.8% C3H8, 0.3% C4H10, 2.6% N2, 0.1% CO2; GCV: 38.6 MJ/m3 . Molecular weights of C, H, O, N are 12 g, 1g, 16 g and 14 g respectively.
(i) During an energy audit, it was proposed to convert this boiler to a condensing boiler. Do you think it is a viable option? Why? In your discussion, consider the main aspects you should look at during the design and operating phases of a condensing boiler.
(ii) Calculate the amount of condensate formed if a condensing section is added to the boiler so that the flue gas exit temperature is 45 °C. Stack pressure is 1.013 bar.
(iv) Calculate the percentage total energy loss with the flue gas and condensate. The specific heat of the dry flue gas and condensate are 1.2 kJ/m3 K and 4.2 kJ/kg K respectively. Assume the molar volume of the gases as 22.4 m3 /kmol
How might your senses help in the diagnosis of urinary system conditions?
What is acetic acid.
