Concept explainers
A proton accelerates from rest in a uniform electric field of 640 N/C. At one later moment, its speed is 1.20 Mm/s (non-relativistic because v is much less than the
Want to see the full answer?
Check out a sample textbook solutionChapter 23 Solutions
Physics for Scientists and Engineers with Modern, Revised Hybrid (with Enhanced WebAssign Printed Access Card for Physics, Multi-Term Courses)
Additional Science Textbook Solutions
Conceptual Physics (12th Edition)
Sears And Zemansky's University Physics With Modern Physics
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
University Physics Volume 1
Essential University Physics: Volume 1 (3rd Edition)
- (a) At what speed will a proton move in a circular path of the same radius as the electron in Exercise 22.12? (b) What would the radius of the path be it the proton had the same speed as the electron? (c) What would the radius be if the proton had the same kinetic energy as the electron? (d) The same momentum?arrow_forwardA Van de Graaff accelerator utilizes a 50.0 MV potential difference to accelerate charged particles such as protons. (a) What is the velocity of a proton accelerated by such a potential? (b) An electron?arrow_forwardUnreasonable Results A proton has a mass of 1.671027 kg. A physicist measures the proton's total energy to be 50.0 MeV. (a) What is the proton's kinetic energy? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?arrow_forward
- The cosmic rays of highest energy are protons that m have kinetic energy on the order of 1013 MeV. (a) As measured in the protons frame, what time interval would a proton of this energy require to trawl across the Milky Way galaxy, which has a proper diameter 105 ly? (b) From the point of view of the proton, how many kilometers across is the galaxy?arrow_forwardA charged particle moves along a straight line in a uniform electric field E with a speed v. If the motion and the electric field are both in the x direction, (a) show that the magnitude of the acceleration of the charge q is given by a=dvdt=qEm(1v2c2)3/2 (b) Discuss the significance of the dependence of the acceleration on the speed. (c) If the particle starts from rest at x = 0 at t = 0, find the speed of the particle and its position after a time t has elapsed. Comment on the limiting values of v and x as t .arrow_forwardA proton accelerates from rest in a uniform electric field of 660 N/C. At one later moment, its speed is 1.00 Mm/s (nonrelativistic because v is much less than the speed of light). (a) Find the acceleration of the proton. m/s² (b) Over what time interval does the proton reach this speed? (c) How far does it move in this time interval? (d) What is its kinetic energy at the end of this interval?arrow_forward
- A constant electric field accelerates a proton from rest through a distance of 1.90 m to a speed of 1.57 × 10^5 m/s. ( The mass and charge of a proton are mp= 1.67×10^-27 kg ans qp= e= 1.60 × 10^-19 C.) a) Find the change in the protons kinetic energy ( in J). b) Find the change in the system's electric potential energy ( in J). c)Calculate the magnitude of the electric field ( in N/C).arrow_forward(a) An positron (electron with a positive charge) starts at rest and accelerates through an electric field established by a set of parallel plates with a potential difference of 35 V. What is the speed of the positron the instant before it hits the negative plate?(e = 1.6 × 10-19 C, melectron = 9.1 × 10-31 kg) (b) Instead of hitting the negative plate, the positron, travelling East, escapes the parallel plates through a small hole and enters a magnetic field of 0.75 T directed downward. What will be the magnetic force (magnitude and direction) on the charge?(c) Once the positron has entered the magnetic field, it is in circular motion. What is the radius of the positron's circular path?arrow_forwardA proton accelerates from rest in a uniform electric field of 650 N/C. At one later moment, its speed is 1.10 Mm/s (nonrelativistic because v is much less than the speed of light). (a) Find the acceleration of the proton.m/s2(b) Over what time interval does the proton reach this speed?s(c) How far does it move in this time interval?m(d) What is its kinetic energy at the end of this interval?Jarrow_forward
- B4arrow_forwardA constant electric field accelerates a proton from rest through a distance of 1.30 m to a speed of 1.25 x 105 m/s. (The mass and charge of a proton are m, = 1.67 x 10-27 kg and 9, = e = 1.60 × 10-19 C.) HINT (a) Find the change in the proton's kinetic energy (in J). (b) Find the change in the system's electric potential energy (in J). J (c) Calculate the magnitude of the electric field (in N/C). N/Carrow_forwardA positively charged particle of mass 1.92 x 10-27 kg initially moves left to right long the x axis at a speed of 4.02 x 103 m/s. It moves into an electric field, which points in the negative x direction, and travels a distance of 0.41 m before coming to rest. What acceleration magnitude does the particle experience? (Ignore gravity) Round your answer to 2 decimal places.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningModern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage Learning
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning