Math and Statistics
DF (commonly used abbreviations) (word bank)
What is degrees of freedom?
Force is 30N, acting 40 degrees from the x-axis. Find the x and y component forces
What is Fx=23N and Fy=19.3N?
A rod has a cross sectional area of 0.123 m2 and a length of 1m. The rod is subjected to a tensile force of 11N, calculate the stress.
What is 89.4 N/m2?
Rules that must be followed by society and, in some cases, be subsets of society (like engineers). (word bank)
What are laws?
m (variable) (word bank)
What is the compound period?
Compute the dot product of v1=<3,4> and v2=<-2,10>
What is 34?
Look at figure B, find the tension in the cables.
What is TA=72N and TB=88N?
Original length of a rod is 12 in. After it is loaded, the length increases by 0.5 in. Calculate the percent elongation
What is 4.17%?
Obligations we owe to our fellow engineers so that we may be members of the profession and obtain and maintain certain certifications or affiliations with professional societies. (word bank)
What is ethics?
A continuing rise in the general price level usually attributed to an increase in the volume of money and credit relative to available goods and services. (word bank)
What is inflation?
Derivative of y = cos(5x3+e2x+19)
What is y' = -(15x2+2e2x)*sin(5x3+e2x+19)?
A marble with mass of 0.45 kg is shot from a slingshot. The marble leaves the slingshot 0.1 s after released. If the force acting on the marble from the slingshot is 301.5 N, find the velocity at launch.
What is 67 m/s?
Classification of fly ash that yields a high early age strength. (N,C,F)
What is class C?
Statements like "Engineers shall, in all matters related to their profession, treat all persons fairly and encourage equitable participation without regard to gender or gender identity, race, national origin, ethnicity, religion, age, sexual orientation, disability, political affiliation, or family, marital status, or economic status" are part of.... (word bank)
What is Code of Ethics (ASCE)?
Look at figure A on the board, is this a uniform gradient cash flow diagram? if so, find the gradient amount (G)
What is yes, G=250?
A business is considering two investments. Each has different possible outcomes in terms of future profit with associated probability.
Investment A is predicted to have a profit of $7,000 with a 75% probability, or a profit of $1,000 with a probability of 25%.
Investment B is predicted to have a profit of $12,000 with a probability of 10%, a profit of $8,000 with a probability of 20%, or a profit of $4,000 with a probability of 70%.
Which investment has the higher expected profit? And what is the profit expected to be?
What is investment B, with a profit of $5,600?
Look at figure D, find the reaction force at E
What is 37.5N?
Refer to figure C, what point (a,b,c,d) is yield stress? and what number range does strain hardening occur?
What is B and 3?
3 basic elements of a contract (word bank)
What are an offer, an acceptance (of the offer), and consideration?
Find the present value, P, of $7,000 in two years if the interest rate is 8%, and the inflation rate (f) is 5%
What is $5,443?
Law of probability
A lottery is taking place to raise money for a charity. There were 50 total tickets sold (numbered 1 to 50). What is the probability that the winning ticket number is an even number or less than 10?
What is 0.6 or 60%?
Block is on a hill at an incline of theta=15 degress. Static friction coefficient is mu=0.26. Will the block slide?
What is yes, block will slide at an angle above 14.57 degrees?
What mortar type (N,S,M,O) is used for reinforced masonry construction when maximum bending strength is essential?
What is type S mortar?
Legal protection for inventions and processes. (word bank)
What is a patent?
There are two alternatives for payback.
Alternative 1 costs $10,000 today, and pays back $12,000 two years from now.
Alternative 2 costs $10,000 today, and pays back $6,000 per year for two years.
The yearly interest rate is 5%.
What alternative is better? What is the amount?(which will get you more money)
What is alternative 2, $1,156?