Engineering, 22.01.2021 18:50 raweber
Fie prisma cu baza [ABC] un triunghi dreptunghic în B, isoscel |AB|=|BC|, A(10,10,0), B(70,10,0), ȋnǎlțimea prismei segmentul |BB1|= h=120. Prisma se sectionează cu un planul de capǎt [P] definit de Px (100,0,0) şi face un unghi de 45o cu planul [H]. Să se determine secțiunea rezultată şi adevarata mărime a acesteia, prin metoda rabaterii. Sǎ se desfǎşoare trunchiul de prismǎ [ABC123] rezultat.
Answers: 1
Engineering, 06.07.2019 02:30
On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)
Answers: 2
Engineering, 06.07.2019 02:30
Precipitation hardening can be achieved in many light alloys by a three-step heat treatment. what is carried out and what is the purpose at each step? why is such a treatment necessary based on the nucleation and growth theory of phase transformation. compare this treatment with tempering martensite for carbon steels (similarities and differences).
Answers: 1
Engineering, 06.07.2019 03:10
Different between right hand turning tool and left hand turning tool ?
Answers: 1
Engineering, 06.07.2019 03:10
Oxygen at 300 kpa and 400 k is in a closed system with an initial volume of 0.1 m3. is now compressed in a polytropic process, with exponent of n 1.2, to a temperature of 500 k. calculate: a) the boundary work done during the compression, in kj b) the heat transfer during the compression, in kj
Answers: 3
Fie prisma cu baza [ABC] un triunghi dreptunghic în B, isoscel |AB|=|BC|, A(10,10,0), B(70,10,0), ȋn...
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