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Physics, 22.06.2019 12:30
Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=
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Physics, 22.06.2019 20:00
Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature
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Physics, 22.06.2019 22:30
Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.
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Physics, 23.06.2019 01:00
2. circled insects have mutations, or changes to their dna. how many of the offspring insects in this generation have mutations?
Answers: 2
Which of the following choices is NOT a common injury in sports?
A concussion and muscle strains
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