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So the correct answer should; 1. Be moving up energy level(s) 2. Have the smallest change in energy The correct answer being "B"? Thanks Again, I'll get there in the end :biggrin:

Thanks again, If I am understanding correctly then the energy transition should be moving up energy level(s). And that the smallest change in energy should result in the smallest frequency - therefore the correct answer is "C"? Thanks in advance,

Thanks, here as the steps I followed; 1. Energy Change = Energy New - Energy Old 2. Energy Change = h x f (h = 6.63x10-34) Is that right? Or I might have made a silly mistake? Thanks in Advance

Thanks mate, so, using the quantum theory, the formula E = hf could be used to find the frequency of each level change? If so, the answer is "E" which, unfortunately, is completely different from the answer I gave in the exam :/

The diagram (see attached) represents some of the energy levels for an atom of a gas. White light passes through the gas and absorption lines are observed in the spectrum. Which electron transition produces the absorption line corresponding to the lowest frequency; A. E3 to E2 B. E2 to E3 C...

thats me going offline, could you please send any answers to <personal email deleted> as i won't be able to access this site before deadline. help much appreciated!

hers a diagram, my paint skills aren't what they should be:redface:

there are three carriages call them X, Y, Z. carriages x and y are connected by link a. carriages y and z are connected by link b. the engine is pulling via carriage x. thanks for the quick response :)

Help!... tension Homework Statement A train is made up of 3 carriages is pulled along a level track by a force of 16500N. Each of the carriages has a mass of 8000 KG, and each experiences 1500N of resistance forces. The train is accelerating at 0.5 m/s/s. Work out the tension in link B...