Engineering » Page 92

Gisselle Proctor

Engineering

The modulus of elasticity for a ceramic material having 6.0 vol% porosity is 303 GPa. (a) Calculate the modulus of elasticity (in GPa) for the nonporous material.

Answer Answers (1)

Engineering

How does an airfoil create lift?

Answer Answers (1)

Engineering

What's the maximum speed limit on an interstate highway

Answer Answers (1)

Engineering

A well-insulated, rigid vessel contains 3 kg of saturated liquid water at 40°C. The vessel also contains an electrical resistor that draws 10 A when 50 V are applied. Determine the final temperature in the vessel after the resistor has been operating for 30 min. (Solve this problem using appropriate software.)

Answer Answers (1)

Engineering

What is the fastest plane

Answer Answers (2)

Engineering

Steel has lower carbon percentage than cast iron. a) - True b) - False

Answer Answers (2)

Engineering

A Carnot heat engine operates between 1000 deg F and 50 deg F, producing 120 BTU of work. What is the heat input to the engine?

Answer Answers (1)

Engineering

Critical Thinking Scenario Role responsibility is associated with roles, tasks, and job assignments. Causal responsibility is associated with results that a person causes to happen. Financial responsibility is associated with the financial consequences that result from a person's actions. In this scenario Cathy Martin believes her personal and professional responsibility is limited entirely to role responsibility. She does not believe that she is personally responsible for consequences resulting from her actions or financial consequences that result from anything she falsely reports to regulatory agencies.

a. True

b. False

Answer Answers (1)

Engineering

Daisy received a class assignment for writing statements in first-order logic form. What option should Daisy use to represent the sentence "All birds can sing" in first-order logic? (This is a test question on Plato's 'AI" Artificial Intellengence course)

A. ⱯSb

B. bⱯS

C. ⱯbS

D. BⱯs

E. ⱯSB

D.

Answer Answers (1)

Engineering

In the layout of a printed circuit board for an electronic product, 12 different locations can accommodate chips.

(a) If five different types of chips are to be placed on the board, how many different layouts are possible?

(b) If the five chips that are placed on the board are of the same type, how many different layouts are possible?

Answer Answers (1)

Engineering

6.4 Consider the freeway and traffic conditions

described in Problem 6.3. If 180 of the 1800 vehicles

observed in the peak hour were large trucks and

buses, what would the level of service of this freeway

be on a 5-mi, 6% downgrade?

Answer Answers (1)

Engineering

You are comparing distillation column designs at 1 atm and 3 atm total pressure for a particular separation. You have the same feed in both cases, and the feed is a saturated liquid in both cases. The product specifications do not change, and the same reflux ratio is used in both cases.

Compared to the design at 3 atm, the design at 1 atm will have: (Select one) a) more stages, fewer stages, the same number of stagesb) a larger diameter, a smaller diameter, the same diameterc) a higher reboiler temperature, a lower reboiler temp, the same reboiler temp

Answer Answers (1)

Engineering

A liquid jet Vj of diameter Dj strikes a fixed cone and deflects back as a conical sheet at the same velocity. Find the cone angle θ for which the restraining force F = (3/2) rhoAjVj^2.

Answer Answers (1)

Engineering

Why does the the diffusion capacitance fall off at high frequencies?

1. At high frequencies the dopants are vibrated across the metallurgical junction and the doping profiles smooths out.

2. Since Gd increases with frequency Cd must decrease with frequency and the parallel combination of Gd and Cd is constant.

3. When the applied bias frequency is higher than the speed which the majority carriers can respond the diode starts to disappear electrically.

4. It takes time to store and remove minority charge, so when the frequency is higher than the inverse of the minority carrier lifetime the carriers can't respond as well.

Answer Answers (1)

America Frazier

Engineering

Code scramble: make the program sort the three numbers x, y and z into increasing order, so that x has the smallest value, y has the next smallest value, and z has the largest value. Drag and drop with your mouse to rearrange the lines.

Answer Answers (1)