Physics

posted by .

An electron with a mass of 9.11 *10^31 Kg is accelerated from rest across a set if parallel plates that have a potential difference of 150 v and are separated by 0.80 cm
A) determine the kinetic energy of the electron after it crosses between the plates. (Ans 2.4 * 10-17 )
B) determine the final speed of he electron ( ans 7.3 * 10^6 m/s)
C) determine the acceleration of the electron while it is between the plates. ( ans 3.3 * 10^15 m/s)
D) determine the time required for the electron
to travel across the plates. (Ans 2.2 * 10-9 s)

  • Physics -

    A.
    KE=eU=1.6•10⁻¹⁹•150 =2.4•10⁻¹⁷ J
    B.
    KE=mv²/2
    v=sqrt(2•KE/m)
    C.
    a= v²/2d
    D.
    v=at
    t=v/a

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. PHYSICS

    In Figure below, an electron accelerated from rest through potential difference V1=0.955 kV enters the gap between two parallel plates having separation d = 18.2 mm and potential difference V2= 160 V. The lower plate is at the lower …
  2. PHYSICS

    An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 1.00 × 104 V. (a) Find the final velocity after the original acceleration period. (b) It then passes between two horizontal …
  3. physics

    An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 5400V . It then passes between two horizontal plates 6.1cm long and 1.2cm apart that have a potential difference of 250V At …
  4. Physics

    A uniform electric field of magnitude 370 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.70 cm. (a) What is the work done by the field on the electron?
  5. Physics - Potential difference (check + help)

    A pair of horizontal plates are situated in a vacuum and separated by a distance of 1.8cm. What potential energy would need to be connected across the plates in order to hold a single electron suspended at rest between them?
  6. physics

    The physics of an electron moving from one plate to another. An electron acquires 4.2 x 10-16 J of kinetic energy when it is accelerated by an electric field from Plate A to Plate B. What is the potential difference between the plates, …
  7. physics

    an electron with a mass of 9.11 x 10^-31 kg is accelerated from rest across a set of 150 V and are separated by 0.80 cm. a) determine the kinetic energy of the electron after it crosses between the plates.( ans 2.4 * 10^-17 j) b) determine …
  8. physics

    A parallel capicitor is made of two plates with cross sectional area A which are separated by a distance d (with a vacuum between the plates). The capacitor is connected to a battery until a charge Q is stored on it and a total potential …
  9. physics

    An electron is accelerated from rest through a potential difference that has a magnitude of 2.90 × 107 V. The mass of the electron is 9.11 × 10-31 kg, and the negative charge of the electron has a magnitude of 1.60 × 10-19 C. (a) …
  10. PHYSICS

    An electron in a TV is accelerated toward the screen across a potential difference of 52.8 kV. How much kinetic energy does the electron gain while accelerating?

More Similar Questions