Recent content by DJ-Smiles

No worries for those who see this in the future, crisis averted!

Also don't take note of the number of each resistor (R1 or R2) I just drew that up and put the normal resistor first.

Homework Statement Ok so I have been given a diagram which if it worked should be attached. I am having a fair bit of trouble understanding it. Now I am aware that there is both electrical and conventional currents but I am confused as to whether this is electrical or conventional. I have been...

I have no clue. Is it R(x)=600x-3dx? I really do not know!

Hmm does that mean, I am correct? It is strange because every question that involves rectangles has been giving me trouble because I always seem to get an answer where the sides are equal! If I am correct in all of these cases then I have been tressing for nothing! Also may I ask you to assist...

Homework Statement A square-based rectangular prism has a total surface area of 54cm^2. Determine the side lengths if the volume is a maximum and hence find the volume. I have done a number of these and I am getting really annoyed because I always get all the sides being equal no matter...

Yeah sorry, I knew that but I was just rushing to write this down. Ok I will try that. Now say a different situation comes up say it was : (1-sinx)/(1+sinx)=(1-cosx)/(1+cos). Not sure if that is doable but something along those lines like instead of cot and tan it was cos or sin? what would i do...

Homework Statement Prove that: (1-tanθ)/(1+tanθ)=(cotθ-1)/(cotθ+1) Homework Equations Trig Identities: tanθ= sinθ/cosθ cotθ= cosθ/sinθ 1+tanθ=secθ 1+cotθ=cosecθ The Attempt at a Solution These sorts of equations are coming up a lot and I am having trouble understanding...

Hmm yeah that is a good point.

I have been doing some thinking about quasars and have been wondering. Are we able to sue the redshift of a quasar to find out the distance of a galaxy? If we know the redshift at a galaxy can't we just use Vrecession= (c*(λ-λo))/(λo), then substitute this value into Vrecession=Hubble's...

yeah I know it's just that the answer is 1/cos(b)sin(b). How would I get to this?

Homework Statement Simplify the following: sin(b)/cos(b) + cos(b)/sin(b) Homework Equations Trigonometric identities The Attempt at a Solution Ok so i have no clue how to do this,I keep trying but can't seem to get the right answer, I have tried to do this: sin(b)/cos(b) +...

Hmm ok then. that is actually sounding good. So if I did this, what could my thesis be? and then some arguments to back it up? At first I disregarded that option because I didn't actually know what it would entail. My main concern is the physics behind it. I need to be able to understand it haha...

Hey guys, I am currently in year 12 and have been asked to develop a thesis on cosmology for an Extended research task (ERT) and I am bewildered. Nothing is coming to mind at the moment and I am struggling. I have no idea what to do mine on. the teacher gave us a list of topics that we might...

what does that mean and how does it affect my final answers?