An electron with an initial velocity v0 = 1.10×105 m/s enters a region 1.0 cm long where it is electrically accelerated (see the figure). It emerges with velocity v = 4.90×106 m/s. What was its acceleration, assumed constant? (Such a process occurs in the electron gun in a cathode-ray tube, used in television receivers and oscilloscopes.)

Older televisions display a picture using a device called a cathode ray tube, where electrons are emitted at high speed and collide with a phosphorescent surface, causing light to be emitted. The paths of the electrons are altered by magnetic fields. Consider one such electron that is emitted with an initial velocity of 1.90 x 107 m/s in the horizontal direction when magnetic forces deflect the electron with a vertically upward acceleration of 5.50 x 1015 m/s2. The phosphorescent screen is a horizontal distance of 7.2 cm away from the point where the electron is emitted. (a) How much time does the electron take to travel from the emission point to the screen? (b) How far does the electron travel vertically before it hits the screen? cm

The Empire State building in New York City is 381 m tall. If a penny were dropped from rest at the height, how many seconds would it take to strike the street below? Air resistance  would make a significant difference in the real world case, but ignore air resistance for now.

Older televisions display a picture using a device called a cathode ray tube, where electrons are emitted at high speed and collide with a phosphorescent surface, causing light to be emitted. The paths of the electrons are altered by magnetic fields. Consider one such electron that is emitted with an initial velocity of 1.90 x 107 m/s in the horizontal direction when magnetic forces deflect the electron with a vertically upward acceleration of 5.50 x 1015 m/s2. The phosphorescent screen is a horizontal distance of 7.2 cm away from the point where the electron is emitted. (a) How much time does the electron take to travel from the emission point to the screen? (b) How far does the electron travel vertically before it hits the screen? cm

Two locomotives 70 kilometers apart are travelling on the same track towards each other, Engine A moves at 22 kilometers per hour east and engine B moves at 13 kilometersper hour west. At the instant both trains begin moving, an annoying mutant fly beginsflying from engine A towards engine B at 33 kilometers per hour . The instant it touchesB, it turns around and flies back. It goes on this way until the two locomotives collideand the mutant fly is finally squashed. So, before its untimely demise, a) what is the total distance the fly flew? b) the time it took till  it was eliminated and c) the average velocity of the fly? how can i find this please

A spaceship is traveling at a constant velocity of v⃗ (t)=250.0iˆm/sv→(t)=250.0i^m/s when its rockets fire, giving it an acceleration of a⃗ (t)=(3.0iˆ+4.0kˆ)m/s2.a→(t)=(3.0i^+4.0k^)m/s2. What is its velocity 5 s after the rockets fire?

After 5.2 seconds of uniform acceleration from rest, a spacecraft reaches an altitude of 5.7 x 10² meters upwards. What is the final velocity of the Spacecraft?

Question 4-a. Numerical: A river flows east at 3.0 m/s. A boat travels between two cities 3000-m apart by maintaining a constant velocity of 15 m/s relative to the water downstream the river. What is the ground speed of the boat measured in m/s?

A conductor in a train travelling at 4.0(m)/(s)[N] walks across the train car at 1.2(m)/(s)[E] to validate a ticket. If the car is 4.0m wide, how long does it take the conductor to reach the other side? What is his velocity relative to the ground.

Here we go again (yes, this set of questions is starting to feel like Groundhog Day). You AGAIN wake up in a strange room, and this time you drop a ball from a height of 2.41 m, and observe that it hits the floor 0.421 s after you drop it. In this case you suspect you are in deep space, far from any planet or star, and that your rocket is accelerating due to the push of its own engines under the floor. In this case, what must the acceleration of your rocket be? 1 43.5 m/s^2 2 43.5 m/s^2 3 13.6 m/s^2 4 20.4 m/s^2