i need this in 1 and half hours

Week 7 –

Nuclear Physics

Please solve the following problems. You must show all work for full/partial credit. When complete, attach a typed cover sheet and submit to the assignment drop-box.

1) What is the approximate radius of

2) What is the approximate radius of a nucleus?

(b) Approximately what is the value of A for a nucleus whose radius is 3.0 x 10-15m?

3) Calculate the binding energy per nucleon for a nucleus.

4)

5) Polonium-214 can decay by alpha decay.

a) The product of its decay has how many fewer protons the polonium-214?

b) Write the nuclear equation for this decay.

6) Write the nuclear equation for the decay of ? If there are any alpha, beta or gamma particles created what is their maximum kinetic energy created?

7) Francium-223 ( ) has a half-life of 21.8 min.

a) How many nuclei are initial present in a 25.0 mg sample?

b) How many nuclei are present 1h and 49 min later?

8) What is the activity of a sample of that contains 8.9 x 1022 nuclei?