I had worked out both these parts previously which shows i was along the right tracks. However, why do you let the value of u equal to be so that i can be substituted in?
The question is from a worksheet we were set but i wasn't sure how to start the problem.
So i need to calculate the speed of each light source first and then calculate the speed relative to the lab using them?
Question
Two monochromatic light sources approach each other head-on with equal
speeds, v=\beta c relative to the laboratory. When they pass each other, the
frequency of the light each receives from the other is halved. Show that \beta =3-\sqrt{8}
Attempt at solution
I have tried to...
If a rocket is traveling past the Earth at speed v, and the time interval measured by the astronaut is four times smaller than the time interval measured by an observer on the Earth. What is the value of v
I have attempted the solution and got:
Δt=γΔt'
Where i believe that gamma will be...
I have been told to use the following resource
http://books.google.co.uk/books?id=GgC69-WUTs0C&lpg=PA138&vq=aerofoil&dq=acheson%20fluid%20dynamics&pg=PA18#v=onepage&q&f=false
I was able to show that for a faster speed the pressure is less using bernoulli principle. I now need to show that the...
After looking into the lift force i hve been able to calculate most of the things i know. I have however been told that i need to use circulation and vorticity to show that the air flows faster over the wing than below it. I need to show this mathematically by derviving an equation but i am...
The problem is each place i look has different answers to my problem which is making it difficult for me to find out if any lift equations for planes are derived, or just calculated experimentally.
Thanks for the reply. Makes a bit more sense. Is the equation for the coefficient of lift derived from anything?
Also is there any other equations for lift which i should be looking in to?
Thanks for the reply. I am fine with most of the theory behind it its just the derivations and formulas that I am a little stuck on.
Im still not entirely sure how to derive the equation i stated. Also is it this equaion which best describes lift as I've found others which also explain lift...
I am currently looking into how aeroplanes fly for a report which i am writing.
I understand the theory behind the lift force produced by different pressures above and below the wing. However, i need to use equations which i can show how to derive in the report.
I have found the following...
I am currently looking into how aeroplanes fly for a report which i am writing.
I understand the theory behind the lift force produced by different pressures above and below the wing. However, i need to use equations which i can show how to derive in the report.
I have found the following...