Bui (D2): 24-2

bui (dnb562) – HW 24-2 – Antoniewicz – (57050) This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A proton is briefly accelerated in the −y direction, as shown in the figure below. A × B × C × k= a + D ×

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003 10.0 points An electric field acts on an electron, resulting in an acceleration of 1.6 × 1017 m/s2 for a short time. What is the magnitude of the radiative electric field observed at a location a distance of 5 cm away along a perpendicular to the direction of the acceleration? Use the following constants: c = 3 × 108 e = 1.6 × 10−19 1 = 9 × 109 N · m2 /C2 . 4π 0

Answer in units of N/C 004 10.0 points

At which location(s) A—D will electromagnetic radiation be detected a short time later? List all that apply, separated by commas. If none apply, enter “none”. 002 10.0 points A proton is accelerated in the direction shown by the arrow labeled a in the figure below. III II I

IV VI V a Which of the arrows labeled I-VI shows the direction of the vector a⊥ at the observation location indicated by the vector r? r 1. VI 2. III
Throughout this problem, use the following constants: c = 3 × 108 m/s e = 1.6 × 10−19 C 1 = 9 × 109 N · m2 /C2 . 4π 0 At time t2 = 2 × 10−9 s, what is the direction of the electric field at location A due to

4. 1, 0, 0 5. 0, 0, 1 6. 0, 1, 0 009 (part 5 of 6) 2.0 points What is the magnitude of this electric field? Answer in units of N/C 010 (part 6 of 6) 2.0 points Just after time t3 , what is the direction of the

bui (dnb562) – HW 24-2 – Antoniewicz – (57050) magnetic force on a positive charge that was initially at rest at location A? Choose the unit vector corresponding to this direction. 1. −1, 0, 0 2. 0, 1, 0 3. 1, 0, 0 4. 0, −1, 0 5. 0, 0, −1 6. 0, 0, 1 011 (part 1 of 5) 4.0 points