Question

In proton beam therapy, a beam of high-energy protons is used to kill cancerous cells in a tumor. In one system, the beam, which consists of protons with an energy of 2.8×10−11J, has a current of 84 nA. The protons in the beam mostly come to rest within the tumor. The radiologist has ordered a total dose corresponding to 3.4×10−3J of energy to be deposited in the tumor.

Answer 1

Proton beam therapy is a type of radiation treatment used to kill cancerous cells in a tumor. It involves directing a beam of high-energy protons to the tumor. The radiologist in this case has ordered a total dose of 3.4×
`10^(-3J)` of energy to be deposited in the tumor.

Step-by-step explanation:

Proton beam therapy is a type of radiation treatment used to kill cancerous cells in a tumor. It involves directing a beam of high-energy protons to the tumor. Unlike traditional radiation therapy, proton beams have the advantage of only penetrating to the depth of the tumor, reducing the overall toxicity dose. The radiologist in this case has ordered a total dose of 3.4×
`10^(-3J)` of energy to be deposited in the tumor.