Exams & Certification

The specific weight of water at ordinary pressure and temperature is 9.81 kN/m3. The specific gravity of mercury is 13.56. Compute the density of water and the specific weight and density of mercury. The Correct Answer and Explanation is : To solve this problem, we will calculate the density of water and the specific weight […]

· · Phosphate group · The number of molecules bonded to glycerol · The number of fatty acid chains · The number of glycerol molecules · The composition of the fatty acid chains · Unsaturated fats · Saturated fats · Phospholipids-cell membranes · unchecked · Phospholipids-storage · unanswered · Triglycerides-cell membranes · unanswered · Triglycerides-storage

How many 1024 x 8 RAM chips are needed to provide a memory capacity of 16KB? a) How many lines of the address bus must be used to access 16KB bytes of memory? b) How many lines must be used to decode chip select? c) Specify the size of the decoders The Correct Answer and

A cache is 16KB (16384 bytes) in size and stores 64 byte blocks. Physical memory addresses are 32 bits (a) How many address bits are used for the byte offset? (b) Determine the number of sets and the number of tag bits for the following configurations (show how you arrived at your answers): (G) Direct

Find the Parametric equation of the tangent vector of curve r(t) = t^2 i + 2t^3 j + 3t k at t = 1. The Correct Answer and Explanation is : To find the parametric equation of the tangent vector of the curve[\mathbf{r}(t) = t^2 \mathbf{i} + 2t^3 \mathbf{j} + 3t \mathbf{k}]at ( t =

The question asks “What is the density of PF3 at STP”? Molar mass of PF3 is 87.9680 so just divide that by 22.4? Is the correct answer 3.92 g/l? The Correct Answer and Explanation is : Yes, your approach is correct! At standard temperature and pressure (STP), 1 mole of any ideal gas occupies 22.4

The drawing shows a triple jump on a checkerboard, starting at the center of square A and ending on the center of square B. Each side of a square measures 4.8 cm. What is the magnitude of the displacement of the colored checker during the triple jump (there is only one right corner)? The Correct

1. What is the difference between a control group and an experimental group?      a. Control group:     b. Experimental group: 2. What is a “double-blind” study?3. What are some common (animal) model systems scientists use? The Correct Answer and Explanation is : 1. Difference Between a Control Group and an Experimental Group: a. Control Group:

From the models of SF4, BrF3, and XEF4, deduce whether different atom arrangement, 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. Compound Electron Dipole Moment Preferred Reason Geometry Molecular

The labor force equals thenumber of people employed.number of people employed plus the number of people unemployed.number of people employed plus the number of people unemployed plus teenagers between ages 14 and 16 who work at least 10 hours a week.adult population. The Correct Answer and Explanation is : The correct answer is: “The labor