K- –10.0 cm-
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An electron at point A in the figure (Figure 1) has a speed v0 of 1.60×106 m/s .
a) Find the magnitude of the magnetic field that will cause the electron to follow the semicircular path from A to B.
b) Find the direction of the magnetic field that will cause the electron to follow the semicircular path from A to B.
c)Find the time required for the electron to move from A to B.
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- Ords 8. An electron is moving through a magnetic field in a direction perpendicular to the field as shown below. The charge is moving with a speed of = 3.5x105 and it experiences a force of F = 1.79×10-13 N. English (US) What is the magnitude and direction of the magnetic field? The charge of an electron is qe = -1.6x10-19 C. v MacBook P 5A charged particle moves un-deflected through a region in which there is a homogeneous electric field and magnetic field as shown. The electric field points in the -x direction, and the magnetic field points into the page. What can be said about the speed of the particle? Its speed is changing Its speed is equal to E/B Its speed is zero Its speed is equal to qBr/mA very wire is carrying a current that is directed along the positive x axis. What is the direction of the magnetic field at a point a distance "d" along the -y axis? a) in the +x direction b) -x direction c) +y direction d) -y direction e) +z direction f) -z direction
- true or false? parts d and e onlyA hydroxide ion (OH−) in a glass of water has an average speed of about 600 m/s. A. Determine the magnitude of the electrical force between the hydroxide ion (charge -e) and a positive ion (charge +e) that is 1.0×10−8 m away (about the separation of 30 atoms). B. Determine the magnitude of the maximum magnetic force that Earth's 3.0×10−5 T magnetic field can exert on the ion.Which of the following statements are true for magnetic field lines? a) Magnetic field lines point in the direction of the magnetic force acting on a charge. b) Magnetic field lines are close together in regions of space where the magnitude of the magnetic field is weak, and they are farther apart in regions where it is strong. c) Magnetic field lines can never intersect. d) Unlike enlectric field line, magnetic field lines are continuos. e) At every point in space, the magnetic field vector at that point is a tangent to the magnetic field line throught that point.
- Two long, parallel wires are separated by 2.8 m. Each wire has a 32-A current, but the currents are in opposite directions. A. Determine the magnitude of the net magnetic field midway between the wires. B. Determine the magnitude of the net magnetic field at a point 1.4 m to the side of one wire and 4.2 m from the other wire. The point is in the same plane as the wires.An electric field of 1.25 kV/m and a magnetic field of 0.529 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed? Number i UnitsWhat is the magnitude of the magnetic force on a charged particle (Q = 5.0 μC) moving with a speed of 80 km/s in the positive x direction at a point where B₂ = 3.0 T? a. b. C. d. e. 2.8 N 1.6 N 1.2 N 2.0 N 0.4 N