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Review. An electron of mass 9. 11 × 10−31 kg has an initial speed of 3.00 × 105 m/s. It travels in a straight line, and its speed increases to 7.00 × 105 m/s in a distance of 5.00 cm. Assuming its acceleration is constant, (a) determine the magnitude of the force exerted on the electron and (b) compare this force with the weight of the electron, which we ignored.
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Bundle: Physics For Scientists And Engineers With Modern Physics, Loose-leaf Version, 10th + Webassign Printed Access Card For Serway/jewett's Physics For Scientists And Engineers, 10th, Single-term
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- In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.40 x 10-17 N during the first 2.70 cm of the tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen. Find the speed of the electrons when they hit the screen.arrow_forwardAn electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +7.67 x 105 m/s to a final velocity of 2.57 x 106 m/s while traveling a distance of 0.0857 m. The electron's acceleration is due to two electric forces parallel to the x axis: = 7.62 x 10-17 N, and , which points in the -x direction. Find the magnitudes of (a) the net force acting on the electron and (b) the electric force .arrow_forwardAn electron of mass 9.11 x 1031 kg has an initial speed of 2.20 x 10° m/s. It travels in a straight line, and its speed increases to 7.40 x 10° m/s in a distance of 5.60 cm. Assume its acceleration is constant. (a) Determine the magnitude of the force exerted on the electron. N (b) Compare this force (F) with the weight of the electron (F), which we ignored. F Need Help? Read It Master It 1:47 PM P Type here to search 11/9/2020 DELLarrow_forward
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- Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
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