Atomic and Nuclear Physics Answers

1.   What is the momentum of a proton traveling at 𝑣 = 0.68𝑐?

the half life of polonium is 140 days percent decrease per week

Compute algebraically the resultant of the

following coplanar forces: 100 N at 30O

, 141.4

N at 45O

, and 100 N at 240O

. Check your

answer graphically.

Cobalt-60, with a half-life of 5.3 years, has a number of

applications, including medical therapy and the sterilization

of medical tools. Determine the mass of a 50 g sample that

would remain after

(a) 6 months

(b) 5 years

How much energy is required to remove one

proton from the nucleus of A = 16, Z = 8, Oxygen? A rough answer

to this question is obtained by giving the binding

energy per nucleon. A better answer is obtained

when we write a reaction that removes a proton

from the nucleus. In this case 16

8O → 1 1p + A = 15. Z= 7, Nitrogen.

Calculate the energy required for this reaction

to take place, known as the proton separation

energy. Compare the two energy values. (The

atomic mass of oxygen is 15.994 u; that of

nitrogen is 15.000 u.)

Find the binding energy and binding energy per

nucleon of the nucleus 62 = A, Z = 28, Nickel . The atomic mass of nickel is 61.928348 u. Please explain step by step.

A moon rock has 3 % of its original Al-26 mass. K/U T/I C

(a) Determine the age of the moon rock.

(b) Discuss any assumptions that must be made when

using this method of dating.