Exams & Certification

Water flows through a straight smooth pipe at a Reynolds number of 800,000. What is the approximate friction factor? a. 0.030 b. 0.014 —> c. 0.012 d. 0.010 The correct answer and explanation is: The correct answer is a. 0.030. The friction factor for a flow in a smooth pipe can be determined using the […]

Vaccination eliminates diseases such as smallpox and polio by: a. eliminating susceptible hosts b. curing infected people c. killing the pathogens that cause smallpox and polio d. all of the above The correct answer and explanation is: The correct answer is: a. eliminating susceptible hosts. Vaccination works by creating immunity in individuals and communities, which

Assume that a study was done on students who were completing their last semester of college and had already secured offers of employment. That study showed that the students’ utility could be modeled as u(HW, PAY, EXAMS) = 500PAY – 5HW – 3EXAMS, where PAY is weekly starting pay after graduation, in thousands of dollars;

Which of the divisions of the pharynx functions as a passageway for food and air? Select all that apply. A Nasopharynx B Oropharynx C Laryngopharynx The correct answer and explanation is: The correct answers are: B. OropharynxC. Laryngopharynx Explanation: The pharynx is divided into three regions: the nasopharynx, oropharynx, and laryngopharynx. Each of these regions

Determine the force in members BC, HC, and HG using the method of sections. State if these members are in tension or compression. 5 kN 4 kN 4 kN 3 kN 2 kN B C D A E 3 m H F + 2 m G 5 m 5 m 5m5m The Correct Answer and

Kinetics of Iodination of Acetone, what was the acid catalyst used in the reaction? Select one: a. Phosphoric acid b. Acetic acid c. Hydrochloric acid d. Nitric acid The correct answer and explanation is: The correct answer is c. Hydrochloric acid. The iodination of acetone is an example of a reaction where the presence of

Activity-based costing (ABC) can have a role in process settings provided a. only direct costs are incurred in the process of manufacturing. b. there is only one activity driver. c. multiple products are being produced. d. a predetermined overhead rate is used to assign direct costs. The correct answer and explanation is: The correct answer

What does ARP stand for? The correct answer and explanation is: ARP stands for Address Resolution Protocol. ARP is a communication protocol used in computer networks, specifically in IPv4 networks, to map a network address (such as an IP address) to a physical address (MAC address). The process allows devices to communicate with each other

A heavy boy and a light girl are balanced on a massless seesaw. If they both move forward so that they are one-third their original distance from the pivot point, what will happen to the seesaw? A. It is impossible to say without knowing the masses and the distances. B. Nothing, the seesaw will still

. Write a subtraction fact with the same difference as 16-7 The Correct Answer and Explanation is: A subtraction fact with the same difference as 16 minus 7 is:17 minus 8. Both 16 minus 7 and 17 minus 8 have the same difference:16 minus 7 equals 917 minus 8 also equals 9 Explanation In mathematics,