Search results

The Solvay Process was a focus in the old (pre-2017) NSW Chemistry syllabus. If you can get hold of a copy of the old Jacaranda Chemistry Year 12 textbook by Thickett, you will find about 5 pages of detailed description of the Solvay Process. Australia once had a Solvay plant at Osborne, in...

It is not uniform circular motion (UCM). The orbit of the satellite is an ellipse. An ellipse is a stable orbit. The object is not going to crash. The force that keeps the two objects gravitationally bound together is the gravitational attraction vector that always points towards the centre of...

Question 32. Analyse the evidence from at least three such experiments about the interaction between light and matter. The examiners have made this question way harder than they imagined. If a scientist did not do experiments, then their work should not be mentioned. For example, Einstein did...

Regarding Question 19, have a look at this. Tell me what you think. Analysing the path of the second proton gets much harder after its path has begun to curve more, but at least initially, I think the acceleration is constant in magnitude but not direction (D). Postscript: I just finished...

Don't feel too bad about this. In the sequel to this story, called "Planet of the Apes", the monkeys have the guns.

This is reminiscent of "The Monkey and the Hunter" problem. It goes like this (this story is not very politically correct, btw). A cheeky monkey keeps stealing bananas from the farm. The farmer gets a gun and waits for the monkey. The farmer spots the monkey hanging from the top of a tree with...

You are probably more correct to draw SFD as you did.

You are quite right, sir. I am indebted to you for checking. I will fix up the worked solutions.

The information in that question makes no sense. It starts off talking about a sample of river water, and then it goes straight to the calibration curve. There is no mention of the test result on the sample. Something has been deleted.

Oops ... the answer is 0.8 millimetres. Thanks for pointing that out, I used the wrong expression for the circumference of a circle. Doh!

Hi everyone. I did another copy of my answers to the 2024 HSC Engineering studies examination. Can somebody go over my answers and check if they are all correct? Thanks to FudiddidoAdrian and tomn22 for constructive feedback. This is the corrected copy.

CD-ROM as others have said, is a read-only technology. Disc diameter is 120 mm and 1.2 mm thick. The standard data capacity is 680 Megabytes. Data is encoded as a spiral track containing a series of pits on a thin layer of aluminium, sandwiched between two very flat layers of plastic. Data is...

No, you won't be tested on obscure rules. There are international standards for drawing network diagrams, but you are not required to know them in IPT. However it is very useful if you can use pictorial symbols like these for the common building blocks of computer networks.

The exact mathematics of the CRC is outside the scope of the IPT Course. If you have a copy of Samuel Davis' book then you can find a few examples on pages 253-256. There are many CRC standards, but they all require a "generator polynomial" which is just a binary number. The sender and the...

Make sure you are familiar with the basic distinction between a pictorial drawing and an orthogonal (orthographic) drawing. Remember that hidden lines are NOT to show on pictorial drawing. Make sure you are familiar with AS1100 rules for dimensioning orthogonal drawings. Make sure you are...

It is another form of the relation v2=u2+2as. It is only considering the vertical component of velocity vy = v sin θ You should be able to derive this relation easily.

It's all about the rate of change of flux (see Faraday's Law). And don't forget - a falling flux and an increasing flux both generate an electric field potential.

Parity bit is the least accurate form of error checking, but it can be performed extremely fast in hardware and therefore it has an important place in data transmission. Parity bit is added to the data packet to ensure that there is an even number of ones in the packet. It can be fooled by a...

Yes, there is a method to reading a Chemistry question, just like there is a method to writing the answer to a Chemistry question. The first thing you have to un-learn is the Advanced English approach! You read a novel or a poem in whole language, the meaning is only revealed after you have read...

Question 26(a) is examining Year 11 Physics content, namely the inverse square law of radiation intensity. Intensity is measured in units of watts per square metre per steradian (solid angle). If the number of square metres of the solar panel is constant, then power is proportional to...