Consider a patient who swallows a radiopharmaceutical that utilizes phosphorus32 32 15p , a β − emitter with a half-life of 14.3 days. the average kinetic energy of the emitted electrons is 720 kev. if the initial sample contained 1.46 × 1014 atoms, find the number of decays that occur in a 15-day period. answer in units of decays.
find the total energy of the radiation emitted during the 15 days. answer in units of j
find the absorbed dose if the electrons are completely absorbed in the target tissue which has a mass of 92 g. answer in units of gy.
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Physics, 22.06.2019 10:50
The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)
Answers: 3
Physics, 22.06.2019 16:30
A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.
Answers: 2
Physics, 22.06.2019 16:30
In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic
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Physics, 22.06.2019 17:00
Explain what will happen if decomposers were apsent from a forest ecoysystem.
Answers: 1
Consider a patient who swallows a radiopharmaceutical that utilizes phosphorus32 32 15p , a β − emit...
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