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Graad 8


Module 2

Kragte en strukture

Aktiwiteit 1

Kragte en Strukture

  • Strukture gee mee as hulle nie sterk genoeg is om die kragte wat daarop inwerk te weerstaan nie. As jy stil op ‘n stoel sit, is die krag wat jy op die stoel uitoefen staties . As jy op die stoel sit en ry, is die krag in beweging en noem ons dit ‘n dinamiese krag .
    Statiese krag
    Dinamiese krag
  • Die volgende kragte bestaan:
  1. Spanning
  1. Samedrukking
  1. Buiging

  1. Skeerkrag (Shear)

Opdrag 2

  1. Jy het slegs ‘n A4-grootte vel papier om jou potloodblik ongeveer 120 mm van die oppervlak van jou lessenaar te ondersteun. Vou die papier op so ‘n manier dat dit die sterkste moontlike struktuur vorm.
  1. Twee “spacecases” word 250 mm van mekaar af geplaas. Jy het een A4-papier om die sterkste moontlike brug te bou om die ruimte te oorspan. Toets met verskillende gewigte wie se bruggie die sterkste is.

LU 1.3


LU 1
tegnologiese prosesse en vaardighede Die leerder is in staat om tegnologies prosesse en vaardighede eties en verantwoordelikheid toe te pas deur gepaste inligtings- en kommunikasietegnologie te gebruik.
Dit is duidelik wanneer die leerder:
ondersoek:1.1 die agtergrondkonteks, die aard van die behoefte, die omgewingsituasie en die mense wat betrokke is wanneer ‘n probleem, behoefte of geleentheid in ‘n nasionaal relevante konteks gegee word ondersoek;
1.3 praktiese toetse in die tegnologiese veld ontwikkel en uitvoer.

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Tegnologie graad 8. OpenStax CNX. Sep 13, 2009 Download for free at http://cnx.org/content/col11051/1.1
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