An electron moves horizontally across the Earths equator at a speed of 2.50 106 m/s and in a direction 35.08 N of E. At this point, the Earths magnetic field has a direction due north, is parallel to the surface, and has a value of 3.00 1025 T. What is the force acting on the electron due to its interaction with the Earths magnetic field?
1.6.88 10-18 N due west
2.6.88 10-18 N toward the Earths surface
3.9.83 10-18 N toward the Earths surface
4.9.83 10-18 N away from the Earths surface
5.4.00 10-18 N away from the Earths surface
[Ques. 2] Explain the shape of the curve you have plotted.
[Ques. 3] A proton moving horizontally enters a region where a uniform magnetic field is directed perpendicular to the protons velocity as shown in Figure OQ29.4. After the proton enters the field, it
1.is deflected downward, with its speed remaining constant.
2.is deflected upward, moving in a semicircular path with constant speed, and exits the field moving to the left.
3.continues to move in the horizontal direction with constant velocity.
4.moves in a circular orbit and become trapped by the field.
5.is deflected out of the plane of the paper.
[Ques. 4] What effect would powdering the solid have on the rate of dissolving the solid in a liquid?
[Ques. 5] A particle with electric charge is fired into a region of space where the electric field is zero. It moves in a straight line. Can you conclude that the magnetic field in that region is zero?
1.Yes, you can.
2.No; the field might be perpendicular to the particles velocity.
3.No; the field might be parallel to the particles velocity.
4.No; the particle might need to have charge of the opposite sign to have a force exerted on it.
5.No; an observation of an object with electric charge gives no information about a magnetic field.
[Ques. 6] What effect would stirring the mixture have on the rate of dissolving the solid in a liquid?
[Ques. 7] A charged particle is traveling through a uniform magnetic field. Which of the following statements are true of the magnetic field? There may be more than one correct statement.
1.It exerts a force on the particle parallel to the field.
2.It exerts a force on the particle along the direction of its motion.
3.It increases the kinetic energy of the particle.
4.It exerts a force that is perpendicular to the direction of motion.
5.It does not change the magnitude of the momentum of the particle.
[Ques. 8] Is solubility a function of temperature? Explain.
[Ques. 9] Define solubility. Give an example.
[Ques. 10] A spatially uniform magnetic field cannot exert a magnetic force on a particle in which of the following circumstances? There may be more than one correct statement.
1.The particle is charged.
2.The particle moves perpendicular to the magnetic field.
3.The particle moves parallel to the magnetic field.
4.The magnitude of the magnetic field changes with time.
5.The particle is at rest.
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