Physical Science
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1 1.3.2 Test (CST): Science and Engineerin...
Engineering, 17.10.2020 21:01 yasmimyamamoto2015
Physical Science
Apex Learning
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1 1.3.2 Test (CST): Science and Engineering
Question 3 of 25
Which two explanations are based on personal beliefs?
I A. Certain mineral crystals have properties that help protect the
body from illness.
B. A constellation's position in the night sky can be used to predict
events in a person's life.
O c. Medical data gathered over many years show that lack of
adequate sleep causes health problems.
O D. Data gathered during experiments show that there is an inverse
relationship between the force of gravity and distance.
O E. Observations using microscopes reveal that all known organisms
are composed of tiny structures called cells.
Answers: 2
Engineering, 04.07.2019 18:10
Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables
Answers: 1
Engineering, 04.07.2019 18:10
True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure
Answers: 2
Engineering, 06.07.2019 03:20
Aload of 10kn is to be suddenly applied to the free end of a vertical rod of length 500 mm, the upper end being rigidly fixed. 190 mechanical science what should the diameter of the rod be if the maximum stress in the rod is not to exceed 100 mpa? the tensile modulus of the rod is 205 gpa.
Answers: 2
Engineering, 06.07.2019 03:20
1kg of water contained in a piston-cylinder assembly undergoes two processes in series from an initial state where the pressure is 3.0 bar and the temperature is 150°c process 1-2: the water is compressed isothermally to a volume of 0.25 m^3 with 120 kj of work being done to the system. process 2-3: the water is heated at constant volume to a final pressure of 10 bar. a. find the change in internal energy for the system. b. calculate the amount of heat transferred, in kj. c. sketch both processes on a t-v diagram. (196.33 kj/kg, 76.33 kj)
Answers: 1
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