Physics, 05.08.2019 22:20 mheiser8768
The spectrum of an excited gas is a series of discrete lines because
a. in multielectron atoms, each electron emits a certain, unique wavelength.
b. different atoms in the gas have different ionization states.
c. other wavelengths are absorbed by the gas.
d. electrons exist in quantized energy states, and only certain transitions are possible.
2. a low-pressure gas discharge tube emits
a. a discrete spectrum
b. a continuous spectrum
c. an absorption spectrum
d. a beta spectrum
Answers: 3
Physics, 22.06.2019 09:30, morgan15776
Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z
Answers: 3
Physics, 22.06.2019 23:30, selena827
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 2
The spectrum of an excited gas is a series of discrete lines because
a. in multielectron atoms...
a. in multielectron atoms...
Mathematics, 06.03.2021 05:50
Mathematics, 06.03.2021 05:50