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a. A point source of 60Co emits equal numbers of photons of 1.17 and 1.33 MeV giving a flux density (i.e. fluence rate) of 5.7 * 109 photon cm-2 s-1 at a specified location. What is the energy flux density (i.e. energy fluence rate) expressed in MeV cm-2 s-1?
b. Give the quantum numbers of all electrons in a silicon (Z=14) atom.
Hazard Identification : Each United Nations hazard class (with the exception of class 9) has a distinctive diamond shaped label bearing a pictogram for quick hazard recognition. F
when one moves from bright to dark place, chairs are not seen at ones. why?
FIRST AID PROCEDURE FOR UNCONSCIOUS CASUALTIES : Let us now discuss the first aid procedure for unconscious casualties. The common causes of unconsciousness in a laboratory accide
What kind of energy does a ball have while moving in the air?
How to become a geology tutor
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