Concept explainers
Positive point charges q = +8.00 μC and q' = +3.00 μC are moving relative to an observer at point P, as shown in Fig. E28.6. The distance d is 0.120 m, ʋ = 4.50 × 106 m/s, and ʋ ' = 9.00 × 106m/s (a) When the two charges are at the locations shown in the figure, what are the magnitude and direction of the net magnetic field they produce at point P? (b) What are the magnitude and direction of the electric and magnetic forces that each charge exerts on the other, and what is the ratio of the magnitude of the electric force to the magnitude of the magnetic force? (c) If the direction of
Figure E28.6
Want to see the full answer?
Check out a sample textbook solutionChapter 28 Solutions
University Physics with Modern Physics (14th Edition)
Additional Science Textbook Solutions
College Physics: A Strategic Approach (3rd Edition)
Lecture- Tutorials for Introductory Astronomy
Introduction to Electrodynamics
Conceptual Physical Science (6th Edition)
University Physics Volume 1
Conceptual Physics (12th Edition)
- Question 1 a) In J. J. Thomson experiment (1897), an electron moving horizontally with a constant speed vo enters in between the horizontal plates of a capacitor. The electric field strength between the plates of length L and distance d, is E. The vertical deviation of the electron at the moment of exit from the field region is measured to be Y. Derive the expression giving the electron's charge to mass ratio, i.e. e/m to be 2v,Y/CEL). (Recall that Thomson received Nobel Prize for his achievement.) b) Calculate e/m, knowing the following data. E=1.6x10* Newton/Coulomb, L=10 cm, Y=2.9 cm, v=2.19x10* km/s. (Be careful to use coherent units.)arrow_forwardThere is a uniform vertical downward electric field as shown in the figure whose intensity is 1200N/C. If an electric charge q = 276 μC is thrown horizontally, with a speed V0 = 5.50 x 10^6 m/s, the mass of the charge is m = 8.67 x 10^-6 kg and it is thrown from a height of 10.0 cm. a. The weight of the load is:_____N. b. The acceleration of the load is:_____m/s2 . c. It is valid in this case to consider that the weight is negligible compared to the electric force acting on the load. d. The load drop time is:_____°.arrow_forwardYou are working on a research project in which you must control the direction of travel of electrons using deflection plates. You have devised the apparatus shown. The plates are of length ℓ = 0.500 m and are separated by a distance d = 3.00 cm. Electrons are fired at υi = 5.00 x 106 m/s into a uniform electric field from the left edge of the lower, positive plate, aimed directly at the right edge of the upper, negative plate. Therefore, if there is no electric field between the plates, the electrons will follow the broken line in the figure. With an electric field existing between the plates, the electrons will follow a curved path, bending downward. You need to determine (a) the range of angles over which the electron can leave the apparatus and (b) the electric field required to give the maximum possible deviation angle.arrow_forward
- An electron is to be accelerated in a uniform electric field having a strength of 2.3·106 Vm. a) What energy in keV is given to the electron if it is accelerated through 0.35 m? b) Over what distance (in km) would it have to be accelerated to increase its energy by 58 GeV?arrow_forwardA charge of Q₁ = -3.0 μC is fixed in place. From a horizontal distance of S = 0.045m a particle of mass m = 7.2x10-³ kg and charge Q₂ = -8.0 μC is fired with an initial speed of Vo = 65 m/s directly towards the fixed charge Q1. What is the minimum distance between Q₁ and Q₂ before Q₁ flips its direction of motion?arrow_forwardA proton (m=1.67 x 10-27 kg) travels a distance of 3.2 cm parallel to a uniform electric field 2.9 x 105 V/m between the plates shown in the figure. If the initial velocity is 4.3 x 105 m/s, find the magnitude of its final velocity in m/s (ignore gravity) Round your answe to 0 decimal places.arrow_forward
- In a given region, there exists an electric field, E = (2x + z)i+ (x – y)j+ (2z – y)k N. m.C. - a. Determine the force felt by a 2.0C charge is placed at position (3.25, 7.5, -4.0)m. b. Determine the position of a 2.0C charge that feels a force of 15j N.arrow_forwardAn electron has an initial velocity of 2.4x106 m/s in the +x direction. It enters a uniform electric field E = 397 N/C which is in the +y direction. What is the ratio of the y-component of the velocity of the electron to the x-component of the velocity after traveling 5 cm in the +x direction in the field? (Your result must include 2 digit after the decimal point and maximum of 5% of error is accepted in your answer. Take elementary charge 1.6x10-19 C and take mass of electron 9.1x10-31 kg.)arrow_forwardConsider two identical particles. The magnitude of their gravitational attraction is equal to the magnitude of their electrical repulsion. What is the ratio of q/m for these particles,given G=6.67×1.^-11Nm^2/kg^2 and Eo=8.854×10^-12C^2/N.m^2?arrow_forward
- A proton of mass 1.67×10−27 1.67 × 10 − 27 kg with speed v = 3×105 3 × 10 5 m/s orbits in a circle of radius r = 3.7 cm around a charged sphere of radius 0.3 cm. The charge on the sphere isarrow_forwardA proton of mass 1.67×10−271.67×10−27 kg with speed v = 3×1053×105 m/s orbits in a circle of radius r = 4.4 cm around a charged sphere of radius 0.3 cm. The charge on the sphere isarrow_forwardAn electron moving horizontally with velocity u enters in a uniform electric field of strength 15000 V/m. It takes 4.0 nanoseconds to cross the plates and emerges out with a velocity v = 3.5 x 107 m/s. Find the magnitude of u.arrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning