homg. (2 Viewers)

[uberturtle]

A gauge to monitor the thickness of cardboard as it is produced in a paper mill consists of a source of beta particles and a detector. The detector registers changes in the intensity of radiation passing through the cardboard.

Describe advantages of this type of gauge compared with a mechanical instrument such as calipers.

 

[undalay]

stupid question waste ur time

 

[uberturtle]

sif it was in our past paper

 

[undalay]

bs, come onlnie and send it to me

 

[namburger]

wtf are calipers

 

[uberturtle]

they're those ice blocks thingos
like the long tube onees.
lol
nah i think they're like rulers or someshit

 

[namburger]

lol, if calipers are rulers, why would you use some radioactive measuring devices when you can measure its length with a ruler =S

Anyway i think through the use of a gauge, it allows you to measure the density of the cardboard.

 

[rooeys2]

lmao this ques was in our past paper?! maybe the gauge is more accurate, more convenient, and economic
calipers lOl

 

[xiao1985]

ADV: no mechanical contact, less wear and tare cost

DISADV: radiation source can endanger worker's health

 

[minijumbuk]

What the hell?

This is the weirdest question I've ever seen.

Any school to put this question sure has a clueless science department.

 

[Undermyskin]

We were just asked about radioactive used for medical purposes. Can't believe they specify the thickness measurement. It's in Conquering Chem but that's not important. I suppose the leakage detection is more useful.

 

[uberturtle]

What the hell?

This is the weirdest question I've ever seen.

Any school to put this question sure has a clueless science department.

yep. my school.
my head teacher is wtf.

 

[rooeys2]

yep. my school.
my head teacher is wtf.

hu are you? ur from my skoo lol and how did you get ur hands on our past papers?

 

[Jinpoo]

^Lololol

 

[Bainesy]

teachers are playing favourites, haha

your teachers are dimwits, tell them this, i bet your they wont hear your, or wont care, hence proving the statement

 

[Pwnage101]

This Q was in one of the IND trials a couple of years ago i believe

 

[Bainesy]

which is why you dont study for trials that much, the questions are stupid and impossible

 

[minijumbuk]

which is why you dont study for trials that much, the questions are stupid and impossible

...
Uhh...If you say so =\

 

[Bainesy]

well you can go and do what you go to do, hours on end, stressing your brain out and then get into the chem exam, get a question like that and realise your study means nothing. you will write a bad answer. you will then worry, worry, worry about it for the rest of the exam. your marks for every following question will then decrease by a mark here and there

I however, with little study and a relaxed mind, will not be freaked out by such a question and will continue the exam in a relaxed manner.

the result will be that we get the same mark, which path do you wanna take?

 

[minijumbuk]

But the result isn't that we get the same mark =\
I'm currently rank 1 at my school, and I've been practising a lot of chemistry. Who says you can't study a lot and be calm at the same time?