A chest x-ray uses 10 keV photons. A 60 kg person receives a 30 mrem dose from one x-ray that exposes 25% of the patient’s body. How many x-ray photons are absorbed in the patient’s body?
What is the activity in and in of a 2.0 mg sample of ?
The first three energy levels of the fictitious element X are shown in Figure P29.56. Hint: The energy of the photon is not the energy transferred to the atom in the collision. Part A What wavelengths are observed in the absorption spectrum of element X? Give your answers in nm. Part B State whether each of your FIGURE P29.56 wavelengths in […]
If the nucleus is a few fm in diameter, the distance between the centers of two protons must be = 2 fm. Part A Calculate the repulsive electric force between two protons that are 2.0 fm apart. Part B Calculate the attractive gravitational force between two protons that are 2.0 fm apart. Could gravity be the force […]