i need this in 1 and half hours   Week 7 – Nuclear Physics Please solve the following problems. ...

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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?