Exams & Certification

A man, attempting a daring dive off a high cliff into a small swimming hole, runs horizontally off the cliff at 11m/s. The cliff is 50m high and the center of the pool, the only safe place to land, is located 50m from the base of the cliff. Does he under shoot, over shoot, or […]

The first smartphone was invented in 1992. The first Apple home computer was invented in 1976. Why then, did most Americans only log onto the Internet in the early 2000 s? What took them so long to do so? If you look at the line graph in Lecture \# 8, page 4 you see the

For how long has there been life on Earth? The Correct Answer and Explanation is : Life on Earth has existed for at least 3.5 billion years. The earliest undisputed evidence of life dates from the Eoarchean Era, over 3.5 billion years ago, following the solidification of Earth’s crust after the earlier molten Hadean Eon.

Depository institutions include Multiple Choice   thrifts.   all of these choices are correct.   banks.   banks and thrifts.   finance companies The Correct Answer and Explanation is : The correct answer is: all of these choices are correct. Explanation: Depository institutions are financial institutions that accept deposits from the public and provide loans

Which of the following is a depository institution? A) A life insurance company B) A mutual savings bank C) A pension fund D) A finance company The Correct Answer and Explanation is : The correct answer is B) A mutual savings bank. Explanation: A depository institution refers to a financial entity that is authorized to

Draw the Newman projections for the anti and gauche forms of 1,2-dibromoethane. The molecule has a dipole moment of 1.0 D. a) Which form is responsible for the molecular dipole (gauche/anti)? (b) Which conformation of 1,2-dibromoethane is present in the greatest amount at equilibrium (eclipsed/gauche/… The Correct Answer and Explanation is : a) Which form

Calculate the molarity of a 30.0% hydrogen peroxide solution.The reported density of 30% hydrogen peroxide is 1.135 g/cm3.(H2O2= 34.0147 g/mol) a) How many grams of solution in 1L? b) howmany grams in hydrogen peroxide are in 1 L? c) What is the molarityand molality of the solution? The Correct Answer and Explanation is : To

Calculate the molarity of (mol/L) of 3% hydrogen peroxide and record it in Data Table 2. The term “3% concentration” is a weight-to-weight measurement, which means that there are 3 g solute per 100 g solvent. The molar mass of hydrogen peroxide is 34.01 g/mol and the density of the solution is 1.01 g/mL. The

Design a 4-bit 4×1 multiplexer using four 4×1 multiplexers. The output should be a single 4-bit output. I’m attaching my current work. The wiring is wrong and I can’t figure out how to fix it. This is the feedback from instructor: Here is the problem, the designed 4*1 mux (4-bit) is not wired correctly. e.g,

For the matrix A= [1 1 2 1 2 3 0 -1 -1] find non-singular matrices P and Q such that PAQ is in the normal form. Hence find the rank of A. The Correct Answer and Explanation is : To solve the problem, we need to find two non-singular matrices ( P ) and