{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Homework 2

# Homework 2 - sanchez(es25396 Homework 2 Stone(13730 This...

This preview shows pages 1–3. Sign up to view the full content.

sanchez (es25396) – Homework 2 – Stone – (13730) 1 This print-out should have 26 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 3) 10.0 points A proton is released from rest in a uniform electric field of magnitude 40000 V / m di- rected along the positive x axis. The proton undergoes a displacement of 0 . 5 m in the di- rection of the electric field as shown in the figure. The mass of a proton is 1 . 672623 × 10 - 27 kg. + + + + + + + + + + + + + - - - - - - - - - - - - - v A = 0 + 0 . 5 m v 0 40000 V / m A B Find the change in the electric potential if the proton moves from the point A to B . Answer in units of V. 002 (part 2 of 3) 10.0 points Find the change in potential energy of the proton for this displacement. Answer in units of J. 003 (part 3 of 3) 10.0 points Apply the principle of energy conservation to find the speed of the proton after it has moved 0 . 5 m, starting from rest. Answer in units of m / s. 004 (part 1 of 4) 10.0 points A parallel-plate, air-gap capacitor has a ca- pacitance of 0 . 1 μ F. The plates are 0 . 6 mm apart. The permittivity of free space is 8 . 85 × 10 - 12 C 2 / N · m 2 . What is the area of each plate? Answer in units of m 2 . 005 (part 2 of 4) 10.0 points What is the potential difference if the capac- itor is charged to 3 . 2 μ C? Answer in units of V. 006 (part 3 of 4) 10.0 points What is the stored energy? Answer in units of μ J. 007 (part 4 of 4) 10.0 points How much charge can the capacitor carry be- fore dielectric breakdown of the air between the plates occurs? Answer in units of μ C. 008 10.0 points Which of the following capacitors, each of which has plates of area A , would store the most charge on the top plate for a given po- tential difference V ? 1. V d Glass 2. V d Vacuum 3. V d/ 2 Vacuum 4. V d/ 2 Air

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

View Full Document
sanchez (es25396) – Homework 2 – Stone – (13730) 2 5. V d/ 2 Glass 009 10.0 points A 7 . 4 Ω metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to one-third the original length.
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