Physics, 14.09.2019 11:10 aliyahedwards94
The spectrum from a hydrogen vapour lamp is measured and four lines in the visible light range are observed. these lines are the so-called balmer series, where an electron makes a transition from a higher level to the second energy level (n2). in this series, the transition from n, 3 to ne 2 produces the photon with the lowest energy, this corresponds to the line with the longest wavelength. this is measured to be a 658.9 nm what value of the rydberg constant r is obtained using these measurements? express you answer in um to two decimal places. it is not necessary to specify the units.
Answers: 3
Physics, 21.06.2019 22:50, peno211
Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.
Answers: 2
Physics, 22.06.2019 17:30, realoneree
This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.
Answers: 1
Physics, 22.06.2019 18:00, Zaydblackwood06
The photo shows sugar dissolved into a solution with excess sugar at the bottom of the jar this type of solution is classified as a. unsaturated b. compound c. saturated d. plasma
Answers: 1
The spectrum from a hydrogen vapour lamp is measured and four lines in the visible light range are o...
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