{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Final_A

# Final_A - PHYSICS 1B FINAL FALL QUARTER 2005 A YOUR NAME...

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

PHYSICS 1B FINAL FALL QUARTER 2005 A YOUR NAME _________________________________________________________________ YOUR UCSD STUDENT IDENTIFICATION NUMBER_____________________________ INSTRUCTIONS: THERE ARE 30 QUESTIONS ON THIS QUIZ. PLEASE FILL IN THE SCANTRON FORM USING A NUMBER 2 PENCIL. PUT YOUR NAME AND THE IDENTIFICATION NUMBER YOU WERE ASSIGNED IN THE SPACES ABOVE. 1 page of notes is allowed. NO BOOKS CELL PHONES, LAPTOPS ALLOWED. CALCULATORS ARE OK. 1. A deuteron, with the same charge but twice the mass of a proton, moves with a speed of 3.0 10 5 m/s perpendicular to a uniform magnetic field of 0.20 T. Which of the paths described below would it follow? ( q p = 1.6 10 19 C and m d = 3.34 10 27 kg) a. a straight line path b. a circular path of 1.6 cm radius c. a circular path of 3.1 cm radius d. a circular path of 0.78 cm radius 2 A proton, mass 1.67 10 27 kg and charge +1.6 10 19 C, moves in a circular orbit perpendicular to a uniform magnetic field of 0.75 T. Find the time for the proton to make one complete circular orbit. Hint: for uniform circular motion, the angular frequency equals the velocity divided by the radius of the circle. a. 4.3 10 8 s b. 8.7 10 8 s c. 4.9 10 7 s d. 9.8 10 7 s 3. Two long parallel wires 20 cm apart carry currents of 5.0 A and 8.0 A in the same direction. Is there any point between the two wires where the magnetic field is zero?

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 ]}