Recent content by A R

Great, I will follow your steps! I did not know whether (i) is allowed to forbidden, but the explanation is sensible as I did not know it is possible for it to emit photons but with 0eV of energy. Thank you, Simon.

Homework Statement Determine if the electron transitions are "allowed" or "forbidden" using the transition rules: i. 2p→2s ii. 1s→2p iii. 3d→2p iv. 3d→1s v. 4s→2p Homework Equations Δl = ±1, Δml= 0, ±1 E = (-2.18*10-18eV)(1/n12 - 1/n22) The Attempt at a Solution I know iv. is forbidden...

Homework Statement An object with a mass of 18 kg is suspended from 2 cables as shown in the below diagram. The tensions in the cables are T1 and T2. a) Draw a free-body diagram for the object. (already solved) b) Find the tension in both ropes, T1 and T2. (already solved) c) If string 2 were...