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a a certain radioactive material emits gamma rays with energy 1 mev another sample of radioactive material emits gamma rays with energy 10 kev if
photon interactionsa consider a si detector of 1 mm thickness 106 photons each with energy of 100 kev are incident on the detector find the number of
a a point source of 60co emits equal numbers of photons of 117 and 133 mev giving a flux density ie fluence rate of 57 109 photon cm-2 s-1 at a
suppose s vi and t ti are easy sets of knapsak weight also p and q are primes p gt si and q gt ti we can combine s and t into a signle set of
a a 2 mm diameter parallel beam of photons each with energy of 100 kev is incident on a water phantom of thickness 15 cm if the exit exposure is 2 mr
1 an ionization chamber is used on tuesday t22degc p760mmhg and then on wednesday t25degc p740 mmhg to monitor the output from an x-ray tube if the
1 consider two monoenergetic photon beams with the same photon fluences in one beam the photons are 100 kev and in the other they are 1 mev determine
f y is a discrete random variable with expected value ey and if x a by prove that var x b2var y
a find the curve on the surface zx32 joining the pointsxyz000 and 111 has the shortest arc lenghtb use a computer to produce a plot showing the
1 finding the shortest path btween any two points on the surface of a sphere but use the method of the euler equations with an auxiliarty condition
i dont want the answer but how i shouuld find the answer plz a rectangular display case houses a square pyramid both have the same square base
the humidity of air can be determined by use of two different thermometers a dry bulb thermometer and a wet bulb thermometer with reference to a
15 kg of oxygen n2 and 015 kg of helium he2 are separated by a partition in a vessel the nitrogen is at 5 bar and 90oc and the helium at 1 bar
1 the composition of solid waste from a residential community is as followscomponentpercent by weightcombustibles---paper and cardboard35food
1 the solid wastes from a summer camp with 100 children and a staff of 25 are to be collected once per week if bottles and cans representing 20 of
1 if the landfill had a compacted density of 600 kgm3 a refuse depth of 9 m 295 ft a moisture content of 20 by volume and a 1-m 325-ft-thick
1write your birth date or the birth date of someone in your family as mmddyy example march 13 1981 is written 31381 and november 7 1967 is written
1using diagramexplain how fluorescence optical bench works 2explain the applications of mass spectrometric detector lcmsin hplc 3discuss
i need help with this question find the probability that two quarters and a nickel are chosen without replacement from a bag of 8 quarters and 12
Constant force if the direction and magnitude of a force is constant, it is said to be a constant force. For example, weight W = mg; force on a changed particle in uniform electric field F =
hi may i know how to substract the idcolum matrix from ksquare matrix as per equation below e k - id-1 s k is mm matrix i
a recipe calls for 2 14 teaspoons of salt for every 1 18 teaspoons of black pepper used how many teaspoons of salt are needed for each teaspoon of
1 most of the genome does not code for protein therefore 99 of the human genome is junk that serves no purpose with specific reference to examples
1 dna must be extensively folded in order to fit inside a nucleus that is less than 10 um in diametera describe how dna is folded into chromatin
1 one of the greates challenges following the human genome project is to understand how genes are regulated and what functions they performa define