When an electron in the hydrogen atom makes a transition from an orbital with n = 6 to an orbital with n = 3, what is the wavelength (in nm) of the light emitted from the hydrogen atom? Group of answer choices

1- 5.47 LaTeX: \times 10−7 nm

2- 1.09 LaTeX: \times103 nm

3- 1.09 LaTeX: \times 10−6 nm

4- 547 nm

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Which of the following are guidelines to follow for obtaining accurate observations