Physics, 07.09.2019 19:20 pennygillbert
Aphoton is emitted when a hydrogen atom undergoes a transition from the n = 8 state to the n = 4 state. calculate values for the following. (a) the wavelength nm (b) the frequency hz (c) the energy of the emitted photon ev
Answers: 2
Physics, 22.06.2019 09:00
Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic
Answers: 2
Physics, 22.06.2019 10:50
Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k
Answers: 1
Physics, 22.06.2019 13:30
The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?
Answers: 1
Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
Answers: 2
Aphoton is emitted when a hydrogen atom undergoes a transition from the n = 8 state to the n = 4 sta...
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