Which of the following is "invalid" assignment? name (x) < - c ("New York", "Seattle", "Los Angeles") names (x) < - c ("New York", "Seattle", "Los Angeles") x < - list ("Los Angeles" = 1, Boston = 2, London = 3)

A 45-kg iron block initially at 280°C is quenched in an insulated tank that contains 100 kg of water at 18°C. Assuming the water that vaporizes during the process condenses back in the tank, determine the total entropy change during this process.

1. The area of the given triangle is 25 square units. What is the value of x? X+2

Define the difference between yield stress and proof stress

Select the correct answer Sam constructs a circuit connects a lead acid battery of 2 v to a lamp of resistance 3 and places an ammeter across it. What must be the reading of the ammeter? A 0.66 A B 0.5 A C 0.54 A 0.61 A

Three intermittent switches A; B; C are in a box. Switches A; B and C work 75%, 50% and 25% of the time, respectively. Suppose switches are selected with equal probability from the box.

Brian is responsible for ordering cement for a construction project. He had just determined that the construction crew would need 540 cubic yards of cement when the building owner decided to shorten the driveway, eliminating the need for 44 cubic

Dave is a recruiter for a very large graphic design firm and he is looking for an employee who is willing to give the entire productive hours to activities related to the job. Which quality is he looking for?

Which of the following is a common use for commas? Separating two elements Separating unrelated adjectives Connecting two independent clauses Connecting two dependent clauses

Which component stores energy as potential energy in a mechanical system?

A floor system has W24 x 55 sections spaced 8'-0"" o. c. supporting a floor dead load of 50 psf and a live load of 80 psf. Determine the governing load. Show all work.