# Question: In a cathode ray tube in an old TV electrons

In a cathode ray tube in an old TV, electrons are accelerated from rest with a constant acceleration of magnitude 7.03 × 1013 m/s2 during the first 2.0 cm of the tube's length; then they move at essentially constant velocity another 45 cm before hitting the screen.

(a) Find the speed of the electrons when they hit the screen.

(b) How long does it take them to travel the length of the tube?

(a) Find the speed of the electrons when they hit the screen.

(b) How long does it take them to travel the length of the tube?

**View Solution:**## Answer to relevant Questions

The graph is of vx versus t for an object moving along the x -axis. How far does the object move between t = 9.0 s and t = 13.0 s? Solve using two methods: a graphical analysis and an algebraic solution. (a) How long does it take for a golf ball to fall from rest for a distance of 12.0 m? (b) How far would the ball fall in twice that time? The free-fall acceleration g = 9.80 m/s2 unless a more precise value is given in the ...A balloonist, riding in the basket of a hot air balloon that is rising vertically with a constant velocity of 10.0 m/s, releases a sandbag when the balloon is 40.8 m above the ground. What is the bag's speed when it hits the ...For the train of Example 2.2, find the average velocity between 3:14 p.m. when the train is at 3 km east of the origin and 3:28 p.m. when it is 10 km east of the origin. The graph for this problem shows the vertical velocity vy of a bouncing ball as a function of time. The y -axis points up. Answer these questions based on the data in the graph. (a) At what time does the ball reach its ...Post your question