Unit/Conversions
Engineering Ethics
Dynamics/Fluid Mechanics
Probability & Statistics
Mathematics
100
What is 46°C in Kelvins, K?
(a) 319.15
(b) 315.9
(c)462.5
(d)293.15
(a) 319.15 K or 319 K
Work Shown:
46 + 273.15 = 319.15
100
Which of the following terms is NOT related to ethics?
(a) Integrity
(b)Honesty
(c)Morality
(d)Profitability
(d) Profitability
100
The first derivative of kinetic energy with respect to time is:
(A) force
(B) momentum
(C) work
(D) Power
(D) Power
100
What is the mean of the following numbers?
71.3, 74.0, 74.25, 78.54, 80.6
75.738
100
What is the cross product of, A´B, of vectors A and B? A = i+4j+6k B = 2i+3j+5k
A´B = 2i+7j-5k
200
How many kPa are in 1 atm?
(a) 98.7
(b) 100
(c)105.56
(d)101.3
(d)101.3
Shown Work:
1 atm = 101.3 kPa
200
Which of the following best reflects an engineer’s ethical responsibility?
a) Prioritize the company's profit over all other interests
b) Disclose confidential information whenever it benefits the public
c) Perform services only in areas of their competence
d) Use creative solutions even if they slightly bend legal standards
c) Perform services only in areas of their competence. This reflects the core ethical principle that engineers should only work within their qualified areas to ensure competence and safety
200
A 10 kg block slides down a frictionless 30° incline. What is the acceleration of the block?
a) 4.9 m/s²
b) 5.0 m/s²
c) 8.7 m/s²
d) 9.8 m/s²
a) 4.9 m/s²
Work Shown:
a=gsin(θ)=9.8sin(30)=9.8×0.5=4.9m/s2
200
3 standard 53-card deck are used in a probability experiment. Once card is dran from each deck. What is the probability that a diamond is drawn from the first deck, an ace from the second deck, and the ace of hearts from the third?
(a) 0.000062
(b) 0.00015
(c) 0.00037
(d) 0.0062
(c) 0.00037
200
Solve for the following set of linear equations for A, B, and C 2A + 3B - C = -10 -A + 4B +2C = -4 2A - 2B +5C = 35
(A) -2, -3, 5
(B) 2, -3, 5
(C) 2, 0, 5
(D) 2, 3, -5
(B) 2, -3, 5
300
What is 46°C in Fahrenheit,°F ?
(a) 103.5
(b) 110.52
(c)114.8
(d)120
(c)114.8
Work Shown:
(46*(9/5))+32=114.8°F
300
An engineer spends all of their free time (outside of work) gambling ILLEGALLY. Is this a violation of ethical standards?
(A) No, the engineer is entitled to a life outside of work.
(B) No, the engineer's empolyer, their clients, and the public are not affected.
(C) No, not as long as the engineer stays debt-free from the gambling activites.
(D) Yes, the engineer should associate only with reputable persons and organizations.
(D) Yes, the engineer should associate only with reputable persons and organizations. Gambling itself is not unethical, but illegal gambling can reflect poorly on an engineer's professionalism and may lead to legal consequences. Engineers must adhere to ethical standards that prioritize public safety and trust. Therefore, while it's a personal choice, it can breach professional ethics if it affects their responsibilities or reputation.
300
A 2 kg object moves in a circular path with radius 4 m at a constant speed of 6 m/s. What is the magnitude of the centripetal force acting on the object, in Newtons? a) 12 N
b) 18 N
c) 24 N
d) 36 N
(b) 18 N
Work Shown:
F = (m* v2 )/ r
300
Disregrading leap years, what is the approximate probability that NO two people in a group of seven have the same birthday?
0.9438
300
(c) 4
400
A car travels 60 miles in 1 hour. What is its speed in feet per second (m/s)?
(a) 60 ft/s
(b) 66 ft/s
(c) 76 ft/s
(d) 88 ft/s
(d) 88 ft/s
Work Shown:
60 miles*(5280 ft/1 mile) = 316800 ft/hr * (1 hour/3600 seconds) = 88 ft/s
400
An engineer discovers that their company is using a cheaper material than what was specified in the construction documents, which may not meet code requirements but saves significant money. The company insists the risk is minimal and pressures the engineer to sign off on the project. What is the most ethical course of action?
a) Sign off to avoid conflict and preserve your job
b) Report the issue internally and recommend halting the project until the material is evaluated for safety
c) Ignore the issue since it's not your design
d) Sign off but make a personal note in case something goes wrong later
b) Report the issue internally and recommend halting the project until the material is evaluated for safety. Engineers have a duty to protect the public welfare and safety above employer or client interests
400
What is the difference between a steady and unsteady flow?
The main difference between steady and unsteady flow is that the properties of steady flow DO NOT change with time.
400
Four fair coins are tossed at once. What is the probability of obtaining 3 heads and 1 tail?
(a) 1/2
(b) 5/8
(c)2/3
(d) 5/8
(a) 1/4
400
(d)
500
A car travels 60 miles in 1 hour. What is its speed in meters per second (m/s)?
(a) 24.0 m/s
(b) 26.8 m/s
(c) 30.0 m/s
(d) 36.2 m/s
(b) 26.8 m/s
Work Shown:
60 miles*(1609.34 milemeters/1 mile) = 96,560.4 meters/hour * (1 hour/3600 seconds) = 26.8223 m/s
500
Which of the following activities is NOT commonly required by codes of ethics for engineers?
(a) acting as a faithful agent or trustee for the client.
(b) accepting payment for services only from the client.
(c) submiting competitive bids to a client.
(d) spelling out all known conditions of bids and proposals
(C) submitting competitive bids to a client. The code of ethics does not require engineers to submit competitive bids. In fact, competitive bids were prohibited in most engineering codes of ethics for many years.
500
A flat plate slides at a constant velocity of 5 m/s on a large horizontal table. A thin layer of oil (dynamic viscosity = 0.40 kg/m.s) separates the the plate from the table. To limit the shear stress in the oil layer to 1 kPa, what should the thickness of the oil film be, mm? (a) 0.215
(b) 2
(c) 6
(d) 15 *Provide the formula for this question*
(b) 2 mm
500
The t-test (based on Student's t-distribution) is useful for....
(a) testing the distribution of outomes to see if they come from a normal distribution.
(b) determiningif the function is symmetric about zero.
(c)comparing values about the mean.
(d) determining if the differences between sample means are significant.
(d) determining if the differences between sample means are significant.
500
A peach grower estimates that if he picks his crop now, he will obtain 1000 ligs of peaches, which he can sell at $1.00 per lug. However, he esitmates that his crop will increase by an additional 60 lugs of peaches for each week that he delays picking, but the price will drop at a rate of $.025 per lug per week. In addition, he will experience a spoilage rate of approximately 10 lugs for each week he delays. In order to maximize his revenue, how many weeks should he wait beforepicking the peaches?
(a) 2 weeks
(b) 5 weeks
(c) 7 weeks
(d) 10 weeks
(d) 10 weeks