When 1.0 kg of coal is burned, about 3.0e7 J of energy is released. If the energy released per 23592U fission is 2.0e2 MeV, how many kilograms of coal must be burned to produce the same energy as 1.0 kg of 235nucleons 92protons U?
What is the activity N//t of the radioactive source?
A 2.0-kg tumor is being irradiated by a radioactive source. The tumor receives an absorbed dose of 12 Gy in a time of 750 s. Each disintegration of the radioactive source produces a particle that enters the tumor and delivers an energy of 0.35 MeV. What is the activity N//t of the radioactive source?
A film badge worn by a radiologist indicates that she has received an absorbed dose of 2.3e-5 Gy. The mass of the radiologist is 67 kg. How much energy has she absorbed?
beam of rays passes through 4.0e-3 kg of dry air and generates 1.6e12 ions, each with a charge of +e. What is the exposure (in roentgens)?
If each fission of a 235nucleons 92protonsU nucleus releases about 2.0e2 MeV of energy, determine the energy (in joules) released by the complete fissioning of 0.9 gram of 235nucleons 92protonsU.
A threory of nuclear astrophysics is that all the heavy elements like uranium are formed in supernova explosions of massive stars, which immediately release the elements into space. If we assume that at the time of the explosion there were equal amounts of 235U and 238U, how long ago were the elements that formed our Earth rele ...continues
positrons and other antiparticles
A photon with an energy of 2.00 GeV creates a proton-antiproton pair in which the proton has a kinetic energy of 95.0 MeV. What is the kinetic energy of the antiproton?
Using Bohr Model determine: 1. energy loss when electron moves from orbit n=3 to n=1 2. calc wavelenght of the light when electron moves orbit from n=3 to n=1
Use the equation attached to calculate the energy of E1, E2, E3 and E energy levels of the hydrogen-like boron ion... (refer to attachment)
Calculate the energy of the photons of the hydrogen-like boron ion
Calculate the energy of the photons of the hydrogen-like boron ion... see attached
