As shown, an electron (charge-e, mass me) moving with an initial velocity in the positive y direction, enters a region (indicated by the shaded area) of uniform magnetic field, of magnitude B. The electron follows a semi-circle path and then leaves out the magnetic field's region at x =-D. The kinetic energy of the electron at x= -Dis:

Alexa and Jeremiah now work on a problem. A beam of protons enter the electric field of magnitude E = 0.800 N/C between a pair of parallel plates. There is a magnetic field between the plates. The magnetic field is parallel to the plates and perpendicular to the initial direction of the protons, and its magnitude is 2.30 T. The proton beam passes through undeflected. What is the speed of the protons? m/s Submit Skip (you cannot come back)

A wire extends from x = - (infinity) to x = 0 on the x-axis, then turns and extends from y = 0 to y = (infinity) on the y-axis. The direction of the current is in the positive direction.  What is the direction of the magnetic field at x = 5 m, y = 0m?

pag Question 1: Magi A point charge of value q = 3.10μC has a speed of = 1.75 x 107-0.81 x 107k when it is at the point (0 cm, 0 cm, 0 cm). What is the magnetic field vector in component form at position (1cm, 1cm, 0cm)? Answer Magnetic Field Vector Mo = 4π *10-7 T.m² c.m S Clectric Potential from Point Charges

Tutorial Exercise In an experiment designed to measure the Earth's magnetic field using the Hall effect, a copper bar 0.415 cm thick is positioned along an east-west direction. Assume n = 8.46 x 1028 electrons/m3 and the plane of the bar is rotated to be perpendicular to the direction of B. If a current of 8.00 A in the conductor results in a Hall voltage of 5.52 x 10-12 v, what is the magnitude of the Earth's magnetic field at this location?

The answer is 3.5. What is the work for this problem?

A positively charged particle slides off a frictionless and smooth surface with initial X X X X X X X X speed v, =v, . It then enters into a region with X X X X X x x x X uniform magnetic field pointing into the page. X X X X x x x x X x x x x x X x x x The particle eventually hits the ground with final speed v, air time and range S · The particle slides off the edge again with identical initial speed, but this time without the magnetic field. The particle then hits the ground with final speed v,, air time t, , and range s,. Determine the relationships between v, and v,, t, and t, , as well as s, and s, (3 marks). Please note that no calculation is needed. You were to provide the relationship in the sense that whether one variable is greater than, smaller than, or equals to the other one (>, <, or =). Provide a rough explanation (3 marks).

A 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/m

can you please ans (a) (b) (c)?

An electron is moving to the right when suddenly a magnetic field is switched on that points out of the page. Describe the resulting path of the electron. O a clockwise circle in the plane of the page O a circular path coming out of the page on the right and into the page on the left O a counterclockwise circle in the plane of the page O a straight line O a circular path coming out of the page on the left and into the page on the right