{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# HW3c - GenericStudent Homework 3 savrasov 39823 This...

This preview shows pages 1–2. Sign up to view the full content.

GenericStudent – Homework 3 – savrasov – 39823 – Jan 02, 2008 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 2 points You have a potential difference of 8 V. How much work is done to transfer 0 . 34 C of charge through it? Correct answer: 2 . 72 J. Explanation: Let : V = 8 V and q = 0 . 34 C . The potential difference is V = W q W = V q = (8 V) (0 . 34 C) = 2 . 72 J . keywords: 002 (part 1 of 1) 2 points Through what potential difference would an electron need to be accelerated for it to achieve a speed of 4 . 5 % of the speed of light (2 . 99792 × 10 8 m / s), starting from rest? Correct answer: 517 . 387 V. Explanation: Let : s = 4 . 5% = 0 . 045 , c = 2 . 99792 × 10 8 m / s , m e = 9 . 10939 × 10 - 31 kg , and q e = 1 . 60218 × 10 - 19 C . The speed of the electron is v = 0 . 045 c = 0 . 045 ( 2 . 99792 × 10 8 m / s ) = 1 . 34907 × 10 7 m / s , By conservation of energy 1 2 m e v 2 = - ( - q e ) Δ V Δ V = m e v 2 2 q e = ( 9 . 10939 × 10 - 31 kg ) × ( 1 . 34907 × 10 7 m / s ) 2 2 (1 . 60218 × 10 - 19 C) = 517 . 387 V . keywords: 003 (part 1 of 1) 2 points In Rutherford’s famous scattering experi- ments (which led to the planetary model of

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern