PHY2054 - Fall 2009 Exam 1

PHY2054 - Fall 2009 Exam 1 - 77777 77777 PHYSICS DEPARTMENT...

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

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 77777 77777 PHYSICS DEPARTMENT PHY 2054 Exam 1 September 30, 2009 Name (print, last first): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. YOUR TEST NUMBER IS THE 5-DIGIT NUMBER AT THE TOP OF EACH PAGE. (1) Code your test number on your answer sheet (use lines 7680 on the answer sheet for the 5-digit number) . Code your name on your answer sheet and UFID number on your answer sheet. (2) Print your name on this sheet and sign it also. (3) Do all scratch work anywhere on this exam that you like. Circle your answers on the test form. At the end of the test, this exam printout is to be turned in. No credit will be given without both answer sheet and printout. (4) Blacken the circle of your intended answer completely, using a #2 pencil or blue or black ink . (5) The answers are rounded off. Choose the closest to exact. There is no penalty for guessing. (6) Hand in the answer sheet separately. Constants g = 9 . 80 m/s 2 e = 1 . 6 10- 19 C 1 C = 10- 6 C G = 6 . 67 10- 11 Nm 2 /kg 2 m e = 9 . 11 10- 31 kg 1nC = 10- 9 C k = 9 10 9 Nm 2 /C 2 m p = m n = 1 . 67 10- 27 kg 1pC = 10- 12 C = 8 . 85 10- 12 C 2 /N/m 2 1 eV = 1 . 6 10- 19 J c = 3 10 8 m/s 1. Three protons, placed on the vertices of an equilateral triangle of 1 mm edges, are released simultaneously with zero initial velocities. When the protons are very far apart, what is their speed [in m/s]? (1) 16.6 (2) 23.5 (3) 11.7 (4) 44.9 (5) 87.7 2. Three protons, placed on the vertices of an equilateral triangle of 0.5 mm edges, are released simultaneously with zero initial velocities. When the protons are very far apart, what is their speed [in m/s]? (1) 23.5 (2) 16.6 (3) 11.7 (4) 44.9 (5) 87.7 3. Three protons, placed on the vertices of an equilateral triangle of 2 mm edges, are released simultaneously with zero initial velocities. When the protons are very far apart, what is their speed [in m/s]? (1) 11.7 (2) 16.6 (3) 23.5 (4) 44.9 (5) 87.7 4. In the figure, the battery creates a potential difference of 3.00 V (it is a 3-volt battery). What is the energy [in J] stored in the capacitors? 12.0 F 2.50 F 8.00 F 1.50 F (1) 39.6 (2) 108 (3) 9.90 (4) 89.1 (5) 24.7 5. In the figure, the battery creates a potential difference of 1.50 V (it is a 1.5-volt battery). What is the energy [in J] stored in the capacitors? 12.0 F 2.50 F 8.00 F 1.50 F (1) 9.90 (2) 27.0 (3) 39.6 (4) 89.1 (5) 51.5 77777 77777 6. In the figure, the battery creates a potential difference of 4.50 V (it is a 4.5-volt battery). What is the energy [in J] stored in the capacitors? 12.0 F 2.50 F 8.00 F 1.50 F (1) 89.1 (2) 243 (3) 9.90 (4) 39.6 (5) 24.7 7. In the figure, the battery creates a potential difference of 100 V (it is a 100-volt battery)....
View Full Document

This note was uploaded on 03/15/2010 for the course PHY 2054 taught by Professor Avery during the Spring '08 term at University of Florida.

Page1 / 7

PHY2054 - Fall 2009 Exam 1 - 77777 77777 PHYSICS DEPARTMENT...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online