



 Do not touch the person.
 Send for adult help.
 Press the stop button to cut off the mains power.
 Switch off the appliance at the socket and pull out the plug.
 If this is not possible, try to push them away from the electricity. Use something made of wood which does not conduct the electricity to you.
 If you are certain that the power is off, then you can attempt to give the person first aid if you have been trained to do it.
 If you give yourself a slight electric shock you may feel weak, so relax a bit before carrying on working.
N.B.: Take good care of a person who has been injured. Keep him / her warm, let him / her lie down and call for help.
Safety measures with regard to
Scissors
 A scissors must be good quality, sharp and in good working order.
 Never let the tips of the scissors close when cutting a line greater than the length of the blades.
 When cutting curves always turn the card and not the scissors.
Craft knives
 Only to be used under very close supervision together with a metal safety ruler.
 Cut onto a suitable safety surface e.g. Very thick card/ cutting board.
 Stand when you cut and retract the blade when you need to put it away.
 The blade should not be to far out.
 You are allowed with the knife in your hand only when you are going to cut.
Drills
 You should know how to change twist drills, how to hold the hand drill and how to keep it at right angles to their work.
 The material to be drilled must be cramped securely.
 Do not remove the chuck completely as it is very difficult to reassemble.
 Select the appropriate twist drill – choosing one too small rather than one too big if in doubt.
 When drilling turn the handle in a clockwise direction and continue turning the same way when removing the drill bit from the hole.
 Hand drills are for holes up to 6mm in diameter; use a brace and bit for larger holes.
 Never leave a hand drill lying on a work top as it can so easily fall off and damage the twist drill.
Glue guns
 Must only be used under very close supervision.
 It is suitable for wood, metals and certain plastics.
 When it is switched on and not in use ensure that it is correctly positioned on its stand.
 Switch off after use.
 Be careful of glue that drips and put it away after the gun is cooled off.
General
 When sawing plastics and metals , safety spectacles should be worn, because there is a risk of eye damage.
 Some plastics become pliable when heated but care must be taken to control the temperature because the burning of plastics is dangerous as many give off poisonous fumes.
 Polystyrene should be cut with a hot wire cutter set low and used in a well ventilated room.
Soldering irons
 Soldering irons must be treated with respect. They often use mains electricity and get very hot.
The rules for correct use are as follows:
 Do not leave them switched on for possible future use. Always switch them off when not in use, because this will prolong the life of the iron.
 Never touch the mains lead with the tip of the iron. It will melt and expose bare wires which could lead to an electric shock.
 Always use a proper soldering iron stand. Failure to do so will mean that there is a risk of the hot iron setting fire to things.
 Avoid breathing in the resin fumes from the flux.
 Protect the work surface with hardboard.
Questions & Answers
find the 15th term of the geometric sequince whose first is 18 and last term of 387
The given of f(x=x2. then what is the value of this f(3) 5f(x+1)
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
can someone help me with some logarithmic and exponential equations.
sure. what is your question?
ninjadapaul
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X6)^2
so it's 20 divided by X6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
is it a question of log
Abhi
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
if A not equal to 0 and order of A is n prove that adj (adj A = A
rolling four fair dice and getting an even number an all four dice
Differences Between Laspeyres and Paasche Indices
No. 7x 4y is simplified from 4x + (3y + 3x) 7y
how do you translate this in Algebraic Expressions
Need to simplify the expresin. 3/7 (x+y)1/7 (x1)=
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
what's the easiest and fastest way to the synthesize AgNP?
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials and their applications of sensors.
what is system testing?
AMJAD
preparation of nanomaterial
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field .
1Electronicsmanufacturad IC ,RAM,MRAM,solar panel etc
2Helth and MedicalNanomedicine,Drug Dilivery for cancer treatment etc
3 Atomobile MEMS, Coating on car etc.
and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
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
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^15
Prasenjit
can nanotechnology change the direction of the face of the world
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.
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
how did you get the value of 2000N.What calculations are needed to arrive at it
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Source:
OpenStax, Technology grade 7. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11032/1.1
Google Play and the Google Play logo are trademarks of Google Inc.