5. An electron strikes the screen of a cathode-ray tube with a velocity of 10 m/s. Compute its kinetic energy in joules. The mass of an electron is 9.11 x 10-³¹ kg. 6. A body of mass 2 kg. is initially at rest on a horizontal frictionless plane. It is the pulled 4 meters by a horizontal force of magnitude 25 N. Use the work-energy relation to find its final speed. 7. In problem 6, suppose the body has an initial velocity of 10m/s and is then pulled 4 meters by a force of magnitude 25 N in the direction of the initial velocity, what is its final velocity?
5. An electron strikes the screen of a cathode-ray tube with a velocity of 10 m/s. Compute its kinetic energy in joules. The mass of an electron is 9.11 x 10-³¹ kg. 6. A body of mass 2 kg. is initially at rest on a horizontal frictionless plane. It is the pulled 4 meters by a horizontal force of magnitude 25 N. Use the work-energy relation to find its final speed. 7. In problem 6, suppose the body has an initial velocity of 10m/s and is then pulled 4 meters by a force of magnitude 25 N in the direction of the initial velocity, what is its final velocity?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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![5. An electron strikes the screen of a cathode-ray tube with a velocity of 10 m/s.
Compute its kinetic energy in joules. The mass of an electron is 9.11 x 10 -³¹ kg.
6. A body of mass 2 kg. is initially at rest on a horizontal frictionless plane. It is the
pulled 4 meters by a horizontal force of magnitude 25 N. Use the work-energy
relation to find its final speed.
7. In problem 6, suppose the body has an initial velocity of 10m/s and is then pulled 4
meters by a force of magnitude 25 N in the direction of the initial velocity, what is its
final velocity?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd9236fd2-10d4-488f-92ea-6e829859db95%2Fa91f4785-f4fc-48f7-8ded-f6c7ea5b402c%2Fu2wn7wp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:5. An electron strikes the screen of a cathode-ray tube with a velocity of 10 m/s.
Compute its kinetic energy in joules. The mass of an electron is 9.11 x 10 -³¹ kg.
6. A body of mass 2 kg. is initially at rest on a horizontal frictionless plane. It is the
pulled 4 meters by a horizontal force of magnitude 25 N. Use the work-energy
relation to find its final speed.
7. In problem 6, suppose the body has an initial velocity of 10m/s and is then pulled 4
meters by a force of magnitude 25 N in the direction of the initial velocity, what is its
final velocity?
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