Explore
Post homework questions online and get free homework help from tutors.
Help Others
Save Time
There are currently 206 guests browsing and 2 members online. So far today, 148 students have registered.
Related Images
 10544 5 03/23/14

 977 5 09/02/14

 21 0 04/05/17
Poll
Should there be a limit to WiFi usage in cafes?
Completely Agree
Somewhat Agree
Completely Disagree
If you would like to vote in this poll, please login or register

Previous poll results: Which is the WORST study habit?
 Test-Bank and Note Requests   5 hours ago   2 Replies   425 Views Test-Bank and Note Requests   One day ago   2 Replies   35 Views Test-Bank and Note Requests   One day ago   1 Reply   25 Views Test-Bank and Note Requests   One day ago   N/A   22 Views Test-Bank and Note Requests   One day ago   3 Replies   194 Views View More Requests
 New Topic
wrote...
Posts: 5
Credits: 20
5 years ago
 [Notes] - Mastering Physics Solutions (Chapter 23 - 28) Enjoy Attached file(s) ch23_sol.pdf (72.69 KB) ch24_sol.pdf (50.35 KB) ch25_sol.pdf (48.48 KB) ch26_sol.pdf (59.61 KB) ch27_sol.pdf (58.05 KB) ch28_sol_hw14.pdf (77.34 KB) Read 96285 times 4 Replies
wrote...
5 years ago
 Thanks for the help.
wrote...
5 years ago
 How much work is needed to assemble an atomic nucleus containing three protons (such as Be) if we model it as an equilateral triangle of side  with a proton at each vertex? Assume the protons started from very far away.W=3.46*10^-13 J
jbananas
wrote...
5 years ago
 Quote from: catherine.lag (5 years ago)How much work is needed to assemble an atomic nucleus containing three protons (such as Be) if we model it as an equilateral triangle of side  with a proton at each vertex? Assume the protons started from very far away.W=3.46*10^-13 JIt would be the sum of the potential energies of all possible pairs;W = 3kq^2/r = 34.56 x 10^-14 JIt takes no work to bring in the first proton.It takes kqq/r to bring in the 2nd proton.It takes kqq/r + kqq/r to bring in the 3rd proton.where "r" is the separation distance between the proton pairs.You can calculate these works by actually doing the work integral qE dr where E is the field of the protons in place and the integral is from infinity to final "r".Of course this is just electric work. It doesn't take into account nuclear force interactions or quantum spin-spin interactions. So its a "rough" model.
wrote...
5 years ago
 Thanks
 New Topic
Similar topics that might interest you...
 Notes | Tutorials | Articles   2 years ago   9 Replies   103079 Views Notes | Tutorials | Articles   2 years ago   39 Replies   9957 Views Physics and Astronomy   4 years ago   1 Reply   6302 Views Physics and Astronomy   3 years ago   1 Reply   5366 Views
This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.