An electron moves at 2.70 x 106 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 7.00 x 10-² T. Part A What is the largest possible magnitude of the acceler Express your answer with the appropriate units. a = μÀ xa Xb Value b X.10n Units wwwww X

A long wire carrying a 4.6 A current perpendicular to the xy-plane intersects the x-axis at x = -1.7cm. A second, parallel wire carrying a 2.2 A current intersects the x-axis at x = +1.7cm. Part A At what point on the x-axis is the magnetic field zero if the two currents are in the same direction? Express your answer with the appropriate units. HÅ x = Submit Part B Value x = Request Answer At what point on the x-axis is the magnetic field zero if the two currents are in opposite directions? Express your answer with the appropriate units. μÅ Units Value BRE ? Units ?

A proton moves perpendicular to a uniform magnetic field B at a speed of 1.10 x 10' m/s and experiences an acceleration of 1.60 x 1013 m/s2 in the positive x direction when its velocity is in the positive z direction. Determine the magnitude and direction of the field. 0.7952e-2 magnitude Your response differs from the correct answer by more than 10%. Double check your calculations. T

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A long, straight wire with a circular cross section of radius R carries a current I. Assume that the current density is not constant across the cross section of the wire, but rather varies as J = αr where a is a constant. What is the magnitude of the magnetic field B(r) for r ≤ R?   A. B = µ0α r3/8R B. B = µ0α r2/3 C.  B = µ0α R2/3 D.  B = µ0α R3/3r

A proton moving at 5.50 x 106 m/s through a magnetic field of magnitude 1.77 T experiences a magnetic force of magnitude 7.30 × 10-13 N. What is the angle between the proton's velocity and the field? Step 1 The magnitude of the force on a moving charge in a magnetic field is FB = qvB sin 8, and, solving for the angle, we have the following. 8 sin -1 = sin-¹ B qvB 1.60 x 10-19 c)([ x 10-13 N |× 106 m/s) (

- An electron moves along the z-axis with vz 4.7 x 107 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the following (x, y, z) positions? ▾ Part B (0 cm, 0 cm, 1 cm) Express your answers using two significant figures. Enter your answers numerically separated by commas. Bz Bz, By, B₂ = Submit Part C BI, By, B₂ = 15. ΑΣΦ Submit Request Answer (0 cm, 2 cm, 1 cm) Express your answers using two significant figures. Enter your answers numerically separated by commas. VG ΑΣΦ Request Answer ? ? T T

Several electrons move at speed 6.40 × 105 m/s in a uniform magnetic field with magnitude B = 0.600 T directed downward.  Find the magnetic force on the electron at point a. N out of the page

An electron moves in a uniform magnetic field. At t = 0 s the electron crosses the negative y-axis at 80 cm from the origin, with velocity 1.70×105 m/s in the positive x-direction. The strength and orientation of the magnetic field are such that the electron will cross the positive x-axis a distance 0.8 m from the origin. a. Draw a picture depicting the trajectory of the electron. Make sure that you include the axes of the coordinate system. Show the direction of the magnetic force, if any, acting on the electron at t = 0 s. b. Find the magnitude of the magnetic field. c. What is the direction of the magnetic field? Justify your answer. e. At what time does the electron cross the x-axis?

A 3.0 uC charge moves horizontally due east with a speed of 4.0*10^5 m/s. A magnetic field of 1.2 T is due north at an angle of 30 degrees below horizonal direction. 1. What is the magnitude of the force on the charge?  a. 1.00 N b. 1.44 N c. 0.72 N  d. 1.25 N 2. What is the direction of the force on the charge? a. Into the earth  b. Out of the earth c. North 60 degrees above horizontal d. South 30 degrees below horizontal