It Is Desired to Obtain a Diffraction Pattern for Electrons

question 7

Multiple Choice

It is desired to obtain a diffraction pattern for electrons using a diffraction grating with lines separated by 10 nm. The mass of an electron is 9.11 × 10^-31 kg.
-What is the approximate kinetic energy of electrons that would be diffracted by such a grating?

• A)1.5 × 10^-6 eV
• B)1.5 × 10^-4 eV
• C)1.5 × 10^-2 eV
• D)1.5 × 10² eV
• E)1.5 × 10⁸ eV

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Definitions:

Confidence Interval

A range of values, derived from a data set, within which the true parameter value is estimated to lie with a certain level of confidence.

Expected Value

The weighted average of all possible values of a random variable, weighted by their respective probabilities.

Simple Linear Regression

A method of fitting a straight line through a set of data points to model a linear relationship between two variables.

Prediction Interval

An interval estimate of a real-valued observation based on a sample of data predicting where an individual measurement will fall.