subject
Engineering, 28.09.2019 21:10 maevemboucher78

(practice work, not graded)

1. identify an object in your house that contains a physical system and list three questions you could use to define the system.
2. use the law of thermodynamics to explain why an ice cube melts in a cup of hot tea.
3. the unit states that systems are not only part of engineering, but also other parts of society, such as financial systems, political systems, etc. could using systems thinking be for these kinds of systems as well? explain your answer.
4. why do you think that engineering students are encouraged to think about uses for technology beyond entertaining society?
5. create a short poem or haiku (a poem with 5 syllables in the first line, 7 syllables in the second, and 5 in the third) to explain a problem you are currently trying to solve. do not use more than 20 words to express the problem.

( explain answer, i really don't understand)

ansver
Answers: 3

Another question on Engineering

question
Engineering, 04.07.2019 18:10
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
question
Engineering, 04.07.2019 18:10
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k
Answers: 2
question
Engineering, 04.07.2019 18:20
The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?
Answers: 3
question
Engineering, 04.07.2019 19:10
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
You know the right answer?
(practice work, not graded)

1. identify an object in your house that contains a physical...
Questions
question
Health, 07.03.2020 02:41
Questions on the website: 13722363