What device can be coupled to an SEM to produce a picture of the elemental distribution of a specimen? Briefly describe how this combination of devices can be used to determine whether a suspect has recently fired a gun
What will be an ideal response?
An X-ray analyzer can be coupled to an SEM to produce a picture of the elemental distribution of a specimen. Gunshot particles are lifted from the shooter's hands with a piece of adhesive tape, which is then examined under the SEM for the particles that may have originated from the bullet primer. When the gunshot residue is exposed to a beam of electrons from the SEM, X-rays are emitted and passed into a detector, where they are converted into electrical signals. These signals are sorted and displayed according to the energies of the emitted X-rays, which can reveal the presence of lead, antimony, and barium, which are frequently found in most primers.
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Through the walls of which organ is most alcohol absorbed into the bloodstream? In what other organ does the remainder of absorption occur?
What will be an ideal response?
What is cybernetics?
What will be an ideal response?
Which of the following refers to those whose behavior is not rational?
a. crazy states b. totalitarianism c. democracy d. authoritarianism
Citizens cannot pick and choose which laws they will obey without destroying the whole concept of _____________
Fill in the blank(s) with correct word