A cardiac pacemaker can be affected by a static magnetic field as small as 1.7 mT. How close can a pacemaker wearer come to a long, straight wire carrying 26 A? mm

6. A wire with length L carries a constant current of I in the +y direction. See figure. It is in a region of space where the magnetic field is given by: B=-B, y (4) L positive constant. If the magnitude of the magnetic force on the wire is F, find Bo. The knowns are F, I and L. Start with dF = Idl x B I i, where Bo is a thickness = dy I L

The magnitude of the magnetic field 70.0 cm from a long, thin, straight wire is 8.0µT. What is the current through the long wire? A

A 13.5 cm long solenoid contains 789 turns and carries a current of 4.75 A. What is the strength ? of the magnetic field at the center of this solenoid?

A 65.0-cm-diameter cyclotron uses a 470 V oscillating potential difference between the dees. F2 سولو 3 E in 1 8.0 C F3 $ 4 OF D R a F4 V % 5 T G & F5 A 6 B Y Part A What is the maximum kinetic energy of a proton if the magnetic field strength is 0.660 T? Express your answer with the appropriate units. Y Fó μÅ 3.313-10-13 J Submit Part B. H X Incorrect; Try Again; 4 attempts remaining How many revolutions does the proton make before leaving the cyclotron? Provide Feedback Previous Answers Request Answer IVE ΑΣΦ 5 → C ZANG ? 2202.79 Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining & 7 N ← F7 U J BANNA ? * CO 8 DII FO M | ( 9 K DD F9 O < E 22 ) O L A F10 command P di F11 ; T { + [ option (1) = F12 Nex } 1 11

A 2278 turn solenoid is carrying a current of 18.2 A. The solenoid is 98.45 cm long. What is the magnitude of the magnetic field (in milli-tesla) through the center of the solenoid?

Q39

An electron and a proton, moving side by side at the same speed, enter a 0.020-T magnetic field. The electron moves in a circular path of radius 7.5 mm. Determine the radius of the proton.

A doubly ionized molecule (i.e., a molecule lacking two electrons) moving in a magnetic field experiences a magnetic force of 6.41 x 10-16 N as it moves at 223 m/s at 67.9° to the direction of the field. Find the magnitude of the magnetic field. T