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Veiligheid

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Tegnologie

Graad 7

Stelsels en beheer: vervoer

Module 1

Veiligheid

Veiligheid

Gebruik veilige werkspraktyke en toon ‘n bewustheid van doeltreffende maniere om materiaal en gereedskap te gebruik.

Dit is belangrik om veiligheidsmaatreëls te ken en van die begin af toe te pas. Maak seker dat jy weet waar die Noodhulptas en die hoofskakelaar is. Onthou ook om alle ongelukke by jou onderwyser/ es aan te meld.

  • Dra altyd ‘n voorskoot af ‘n oorjas om jou klere te beskerm en toe skoene om jou voete te beskerm.
  • Trek jou baadjie / trui uit en rol jou moue op. Druk ook jou das se punte in jou hemp in.
  • Dogters moet lang hare uit hul gesigte hou deur dit in ‘n poniestert vas te maak.
  • Verwyder verkieslik alle juweliersware soos ringe, kettinkies en armbande.
  • Moenie onverskillig met gereedskap soos skroewedraaiers wees nie.
  • Moenie hardloop of rondspeel in die klas nie, veral nie met gereedskap in jou hande nie.
  • Moenie hardop uitskree terwyl daar met gereedskap gewerk word nie.
  • Jy mag nie alleen of sonder toestemming met enige gereedskap of masjiene werk nie.
  • Volg alle instruksies oor die gebruik van apparate noukeurig.
  • Dra skerp gereedskap naby jou lyf en met die skerp punt na onder.
  • Moenie gereedskap gebruik vir ‘n ander doel as waarvoor dit gemaak is nie.
  • Plaas gereedskap na gebruik terug op sy oorspronklike posisie.
  • Hou jou werkoppervlak en vloerspasie rondom skoon en netjies.
  • Gebruik elektriese toestelle slegs na deeglike opleiding en met toestemming.
  • Moenie elektriese toestelle in klam of nat toestande gebruik nie.
  • Slegs een leerder word op ‘n slag by ‘n elektriese toestel toegelaat.
  • Maak ‘n masjien skoon na gebruik en rapporteer enige probleme of beskadiging, soos bv. dat ‘n draadskêr stomp is.
  • Was jou hande deeglik en droog hulle af na elke les.
  • Was jou hande veral deeglik as jy met olie, chemikalieë, verf of gom gewerk het.
  • Moenie hout in jou een hand vashou as jy dit met die ander hand saag nie.
  • Moenie ‘n skroef in ‘n stuk hout indraai as jy laasgenoemde in jou hand vashou nie.

Moenie in die rigting van jou ander hand of jou lyf beitel nie.

  • Gebruik ‘n saagplank vir enige saagwerk.
  • Sit gereedskap so neer dat die snykant weg van jou naaste maat is.

VEILIGHEID TEN OPSIGTE VAN ELEKTRISITEIT

Verskeie projekte vereis òf hoofstroomelektrisiteit òf battery-elektrisiteit. Kennis moet geneem word dat water en vog elektrisiteit gelei. Alle elektriese toestelle moet met sorg hanteer word, veral kondensators. Batterye moet verkieslik in aparte houers gebêre word. Batterye moet uit stroombane verwyder word. Stroombane moet oop wees as projekte gebêre word. Moenie met hoofstroomelektrisiteit speel nie, want jy kan jou doodskok. Skok kan ernstige brandwonde en ander beserings veroorsaak.

Hoe om ‘n elektriese toestel aan te skakel

  • Kontroleer dat die toestel afgeskakel is.
  • Kontroleer dat die sok afgeskakel is.
  • Kontroleer of die elektriese koord en prop nie beskadig is nie.
  • Druk die prop in die sok.
  • Skakel die sok aan by die muurskakelaar.
  • Skakel die apparaat aan by die skakelaar.

Hoe om ‘n elektriese toestel af te skakel

  • Skakel die toestel af by die skakelaar.
  • Skakel die sok af by die muurskakelaar.
  • Verwyder die prop van die sok.

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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Source:  OpenStax, Tegnologie graad 7. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11031/1.1
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