A person with lymphoma receives a dose of 45 Gy in the form of γ radiation during a course of radiotherapy. Most of this dose is absorbed in 18 g of cancerous lymphatic tissue. (a) How much energy is absorbed by the cancerous tissue? (b) If this treatment consists of five 20 minute sessions per week over the course of 5 weeks and just 1% of the γ photons in the γ ray beam are absorbed, what is the power of the γ ray beam? (c) If the γ ray beam consists of just 0.5% of the γ photons emitted by the γ source, each of which has energy of 0.03MeV, what is the activity (in Ci) of the γ ray source?

Explanation:

a)  Energy absorbed by cancerous tissue E = R x M

R is the radiation dosage

M is the mass of the lymphatic

Energy absorbed by cancerous tissue

b) If only 1% of the total energy Et is absorbed over 20min session for 5 weeks = E

And the time of the period of the course is t = 20 x 5 = 100 min

E = 0.01Et

Total energy of gamma ray beam

Et = E x 100

= 810 x 10⁻³ x 100

= 8100J

Power of gamma ray beam is P

c) The total activity

The Number of decays dN = Es Total energy emitted at sourse per seconds / energy emitted per day

The Energy source Es per seconds = 0.05Ps

P= 0,0135W

The Power emitted at source

The Energy emitted per decay = 0.03MeV

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.