physics

An ion enters a mass spectrometer which has a .18 T field perpendicular to?
an electric field of 1.6 kV/m and selects a velocity. the same magnetic field is then used to deflect the singly charged ion into a circular path of radius 12.5 cm.

a. what velocity was selected
b. what was the ion mass

  1. 👍
  2. 👎
  3. 👁
  1. Part A What velocity was selected?

    We need to find the velocity so for that we have simple formula

    v = E/B plug in the numbers we get

    v = 1.6kV/m / 0.18 T = 8.9 km/s

    Part b) What is the ion mass?

    we need to find the ion mass for that we know the formula

    m = erB²/E = 0.125 m* 1.6x10^-19* (0.18)^2 / ( 1.6 * 10 ^ 3 V/m ) = 4.05 * 10 ^ -25 kg

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    Which of the following statements about electric field lines due to static charges are true? (Select all that apply.) Electric field lines can never cross each other. Static charges can create closed loop electric field lines that

  2. college physics

    The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the

  3. Physics

    There is a proton that is at the origin and an ion at x1=6 nm. If the electric field is zero at x2= -3 , what is the charge on the ion? All I ahve for this is 2q/d^3=-e/x1^3 q=9*10^9 d=9 e=1.602*10^-19 x1=6 I get -2.7. They want

  4. Physics

    As you travel through space, you find yourself moving into regions of ever-higher voltage. You are traveling . . . A) perpendicularly to the electric field. B) in exactly the same direction as the electric field. C) in a region

  1. physics

    an electron with a speed of 5.00 x 10^8 cm/s enters an electric field of magnitude 1.00 x 10^3 N/C, traveling along field lines in the direction that retards its motion. a) How far will the electron travel in the field before

  2. help help physics

    An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The

  3. Physics

    An electron moving to the right at 3.0% the speed of light enters a uniform electric field parallel to its direction of motion. If the electron is to be brought to rest in the space of 4.5 cm, determine the following. What

  4. Physics

    As you travel through space, you find yourself moving into regions of ever-higher voltage. You are traveling . . . A) perpendicularly to the electric field. B) in exactly the same direction as the electric field. C) in a region

  1. College

    An electron enters the region of a uniform electric field, with v1=3*10^6 m/s and E=200N/C. The horizontal length of the plates is 0.100m 1. Fine the acceleration of the electron while in the field. 2. If the electron enters the

  2. Physics

    A singly charged positive ion has a mass of 3.20*10^_26kg . after being accelerated from rest through a p.d of 833v,the ion enter magnetic field of 0.920T a long a direction perpendicular to the direction of the field.cal.the

  3. physics

    please check: Two point charges, initially 1 cm apart, are moved to a distance of 3 cm apart. By what factor do the resulting electric and gravitational forces between them change? a. 9 b. 3 c. 1/3 d. 1/9 D Two positive charges,

  4. Electromagnetism

    A particle with a mass of 6.64x10^-27 kg and a charge of +3.2x10^-19 C is accelerated from rest through a potential difference of 2.45x10^6 V. the particle then enters a uniform magnetic field of strength 1.60 T. a) Find the

You can view more similar questions or ask a new question.