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A crystal diffracted a beam of electrons. The crystal spacing was 0.18 nm and the maximum scattering occurred at 80.° relative to the surface normal. The electrons were directed normally onto the crystal.
(a) What is the wavelength of the electrons?
(b) What potential difference accelerated the electrons?
Legal Limit
The maximum or minimum legal amount or boundary permitted for certain values or actions, often set by laws or regulations.
Cross-sectional Study
A type of observational study that analyzes data from a population, or a representative subset, at a specific point in time.
Cohort Effects
Differences observed in a study that are due to the characteristics of the group of participants, not the effect of the experiment itself.
Developmental Age
A measure of a child's growth or maturity level, which may differ from their chronological age.
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