Exams & Certification

Green Wave Company plans to own and operate a storage rental facility. For the first month of operations, the company has the following transactions. The Correct Answer and Explanation is : To fulfill your request, we’ll go through three steps: recording each transaction, posting to T-accounts, and preparing a trial balance. 1. Recording the Transactions […]

Which of the following is the correctly balanced equation for the complete neutralation of A by Ca(OH)2? The Correct Answer and Explanation is : To determine the correct balanced equation for the complete neutralization of an acid (let’s assume the acid is hydrochloric acid, HCl) by calcium hydroxide, Ca(OH)₂, we need to make sure that

Draw an electron-dot structure for CH3-C=C-CO2- What the molecular geometry about the left carbon atom? (Shape) What the molecular geometry about the right carbon atom? (Shape) What the molecular geometry about each of the central two carbon atoms? (Shape) The Correct Answer and Explanation is : To answer your query, let’s first draw the electron-dot

Lead forms two compounds with chlorine, PbCl2 and PbCl4. The melting point of PbCl2 is 501oC, and that of PbCl4 is -15 oC. Interpret these melting points in terms of the types of solids. The Correct Answer and Explanation is : The significant difference in melting points between PbCl2 and PbCl4 can be explained by

a. You are in an airplane cruising smoothly at 600 mph. What experiment, if any, could you do that would demonstrate that you are moving, while those on the ground are at rest? b. Frame S_ moves relative to frame S as shown in Figure Q27.2. a. A ball is at rest in frame S_.

A “cleft chin” is a chin with a slight indentation in the middle. A cleft chin is a dominant trait. What is your phenotype and possible genotype(s) for cleft chin? The Correct Answer and Explanation is : Answer Phenotype: Cleft chinPossible Genotypes: CC or Cc Explanation A “cleft chin” is a physical trait that appears

A hyperbola for which a = b is called an equilateral hyperbola. Find the eccentricity e of an equilateral hyperbola. The Correct Answer and Explanation is : Correct Answer: The eccentricity ( e ) of an equilateral hyperbola is ( \sqrt{2} ). Explanation: An equilateral hyperbola is a type of hyperbola where the lengths of

Paramount Electronics has an annual profit given by P=-150,000+6,000q -0.1q dollars Where q is the number of laptop computers it sells each year. The number of laptop computers it can make and sell each year depends on the number n of electrical engineers paramount employees, according to the equation q 35n+0.02n’. Find dP at n12

A. Find the centre of mass of a hemispherical shell of constant density and inner radius and outer radius r2.. B. Find the centre of mass of a uniformly solid cone of base diameter 2a and height h. C. Find the centre of mass of a uniformly solid cone of base diameter 2a and height

Centre of mass of hemisphere. Consider a hemisphere of radius R. (a) Assuming a solid hemisphere with a mass/volume of p, find the centre of mass. (b) Repeat, assuming the hemisphere is a thin shell with a mass/area of s. (c) Compare the two values of zcM. Do they make sense? The Correct Answer and