Exams & Certification

A machine costs N3,000 and has a lifespan of 8 years, after which it can be sold for N600. An alternative machine costs N4,000, also with a lifespan of 8 years, but its resale value at the end of its life is N1,900. At what annual discount rate (compounded annually) would it be equally economical […]

Accounts maintained within the ledger that appear on the statement of financial position include all of the following except The correct answer and explanation is : The correct answer is a. Salaries expense. Explanation: The Statement of Financial Position, also known as the Balance Sheet, represents the financial position of a company at a specific

The entire group of accounts maintained by a company is the a. Journal.b. Statement of financial position.c. Ledger.d. T-account. The correct answer and explanation is : The correct answer is c. Ledger. Explanation: In accounting, the term ledger refers to the entire group of accounts maintained by a company. A ledger is a central record-keeping

What do the last two letters of the lining or pad edge code identify? The correct answer and explanation is : The last two letters of the lining or pad edge code identify the material composition or the type of material used for the pad or lining. In many industries, especially in textiles, fashion, automotive,

Moyas Corporation sells a single product for $20 per unit. Last year, the company’s sales revenue was $300,000 and its net operating income was $24,000. If fixed expenses totaled $96,000 for the year, the break-even point in unit sales was: 14,100 units9,900 units15,000 units12,000 units The correct answer and explanation is : To find the

Explain how a self-adjusting brake mechanism works. The correct answer and explanation is : A self-adjusting brake mechanism is a system used in vehicles to automatically adjust the brake shoes or pads to maintain proper clearance from the brake drum or rotor. This system ensures that the brake shoes or pads stay at the correct

List all the parts of a typical drum brake. The correct answer and explanation is : A typical drum brake system consists of several key parts that work together to slow down or stop a vehicle. These parts include: Explanation: Drum brakes operate based on friction. When the driver presses the brake pedal, hydraulic pressure

What property of oil makes it float on water? The correct answer and explanation is : The property of oil that makes it float on water is its lower density compared to water. Explanation: Density refers to the mass of an object per unit volume, often expressed in grams per cubic centimeter (g/cm³). Water has

Chromium has four isotopes. Chromium-50 (mass of 49.946 amu and 4.35% abundance), chromium-52 (mass of 51.941 amu and 83.79% abundance), chromium-53 (mass of 52.941 amu and 9.50% abundance), and chromium-54 (mass of 53.939 amu and 2.36% abundance). Calculate the average atomic mass of chromium The correct answer and explanation is : To calculate the average

From your models of SF4 , BrF3, and XeF4 deduce whether different atom arrangements, called geometrical isomers are possible; if so, sketch them below. Indicate the preferred geometry for each case and suggest a reason for your choice. Indicate which structures have dipole moments and show their direction. (A) SF4 (B) BrF3 (C) XeF4 The