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@Bendwhat?_over If you are not familiar with the ES syllabus, then you should download it from the NSW Education website. It's free. Engineering Studies has four focus areas: Scope of the Engineering Profession, Engineering Communication, History of Technology and Materials Science. In the...

@v.tex Yes, your answer is right. range sx = 2v2 cosθ sinθ /g

Without seeing your extended response answers all I can offer is a generic scaffold: (1) Use the blank lines provided to measure the length of your answer. (2) Answer all parts of the question. (3) Know the syllabus front-to-back and identify the syllabus points that are being examined in the...

pm to me, I may be able to help

You have two types of motion - translational motion and rotational motion. Force vectors cause translational motion, and torques (or turning moments) cause rotational motion. Torque links to angular acceleration and to angular velocity so of course there is also angular momentum. Yes, or course...

In my post above I described the displacement of a car in two different experiments. Here is a more mathematical reasoning. In the static experiment, the car slides down the inclined plane. That is the car's displacement with respect to time. Velocity is the first derivative of displacement with...

@anonymoushehe Yes there are two cases for the normal force. The problem here is you haven't told us what is the motion of the object on the inclined plane. I agree with liamkk112 that you should discard those green vectors, they are distracting you from a proper understanding the free-body...

You are doing your HSC in October 2025, right? Don't stress about it, just learn from the mistake. Another thing - there is a big difference between 2 radians and 2 degrees, so make sure you do a reality check on all your answers. Don't just write down what ever the calculator says without...

@Isaackapoor I would dispute the idea that the gas exiting from the balloon is somehow an expression of entropy. The connection between Chemistry and Physics that you mentioned is already well known - it is called thermodynamics. Sorry to deflate your balloon. Yes, it is a spontaneous process...

You didn't mention if the digitiser still works (the bit that responds to touch), or if the screen glass is cracked. If the case only has a very slight bend, then an Apple repair shop should be able to gently bend it back again.

Question 22. The centripetal acceleration of a car executing circular motion on a flat road can be described by ac=v2/r If the friction with the road is suddenly half, then the centripetal acceleration must be half. The velocity must reduce to \frac{v} {\sqrt(2)} Question 23. Which part can't...

There are many proprietary international standards for drawing network diagrams. Yes Cisco has a very large library of their own symbols but they are only one amongst many. Strictly the Cisco symbol library is only supposed to be used to describe Cisco networks; shucks to you if you have...

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 2024 HSC Physics Question 19 I just finished analysing the second proton, and if it stays within the chamber, then its motion will be an ellipse. The best answer is (C).

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.