1Give a detailed definition (description) of a `Blank” when we talk about collection medium,

QUESTION 1Give a detailed definition (description) of a `Blank” when we talk about collection medium,

purpose and usage: (see methods slides in course materials on Bb)
QUESTION 2In a vent system with no leaks how should we change the exhaust area in order to decrease the air velocity 10 times?

Explain!
QUESTION 3What is the reason alpha particles to have shorter travel (penetration) distance compared to other ionizing radiation types.(NOTE copy paste from a web page will give you 0 pts)
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