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A proton is traveling horizontally to the right at  .

(a) Find the magnitude and direction of the weakest electric field that can bring the proton uniformly to rest over a distance of 3.20 cm.

(b) How much time does it take for the proton to stop after entering the field?

(c) What minimum field (magnitude and direction) would be needed to stop an electron under the conditions of part (a)?

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Priyanka
PriyankaLv10
5 Apr 2021
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

1. Two point charges are placed along the horizontal axis withthe following values and positions: +3μC at x=0cm and -5μC atx=20cm. At what point (in cm) along the x-axis is the electricfield zero?

2. A proton initially moves left to right along the x-axis at aspeed of 2x103m/s. It moves into an electric field,which points in the negative x direction, and travels a distance of0.15m before coming to rest. What acceleration magnitude does theproton experience?

A beam of electrons is shot into a uniform downward electric fieldof magnitude 1.11 103 N/C. The electrons have an initial velocityof 1.05 107 m/s, directed horizontally. The field acts over a smallregion, 5.00 cm in the horizontal direction.
(a) Find the magnitude and direction of the electric force exertedon each electron.
I know the direction is upward, but I don't know how to calculatethe magnitude.
(b) How does the gravitational force on an electron compare withthe electric force?
I know the answer to B is The gravitational force is much smallerthan the electric force.
(C)How far has each electron moved in the vertical direction by thetime it has emerged from the field?
(d) What is the electron's vertical component of velocity as itemerges from the field? (Up is the positive y-direction.
(e) The electrons move an additional 20.6 cm after leaving thefield. Find the total vertical distance that they have beendeflected by the field.

Please when you answer these questions please tell me the formulaand how you did each problem step by step. No matter what I do, I'mgetting the answer wrong.

I NEED THIS ANSWERED BEFORE MIDNIGHT PST! I WILL RATELIFESAVER!

A very thin glass rod 4 meters long is rubbed all over with a silkcloth. It gains a uniformly distributed charge 1.6X10^–6 C. Twosmall spherical rubber balloons of radius 1.2 cm are rubbed allover with wool. They each gain a uniformly distributed charge of-8X10^–8 C. The balloons are near the midpoint of the glass rod,with their centers 3 cm from the rod. The balloons are 2 cm apart(4.4 cm between centers).




(a) Find the net electric field at the location marked by the X,0.6 cm to the right of the center of the left balloon. Things tothink about: Which objects make nonzero contributions to E field atthis location? What are the correct distances from sources to theobservation location? What is the direction of E field due to therod? (The drawing is not to scale; read the problem statementcarefully. Assume the +x axis is to the right, the +y axis is up,and the +z axis is out.)

E = ________ N/C

(b) What approximations did you make, if any? Which apply(1-4)?
1. Neglect polarization of balloons.
2. Use approximate formula for electric field of a chargedspherical shell.
3. Neglect polarization of rod.
4. Assume distance to observation location is small compared tolength of rod.

(c) Next a proton is placed at that same location (marked by thex). What is the force acting on the proton?

F = ________ N
Note: in parts (a) and (c) there should be an arrow over the"E" and the "F" but the custom equation function would not workproperly.

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