Item 3An object with a charge of -3.3 μC and a mass of 4.7×10-² kg experiencesan upward electric force, due to a uniform electric field, equal in magnitudeto its weight.For the steps and strategies involved in solving a similar problem, you mayview the following Example 19-16 video:SOLUTIONIn the x direction:F0=-qE+mg, +T,In the y directionF-0=-qE, +mg, +7,Free-body diagramL.-TO▼Part AFind the magnitude of the electric field.Express your answer in newtons per coulomb.Π ΑΣΦE =SubmitPart BRequest AnswerFind the direction of the electric field.upwardO downwardO to the leftO to the rightSubmitRequest Answer?N/C ▼▼Part CIf the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration.Express your answer in meters per second squared.|| ΑΣΦa =SubmitPart DRequest AnswerupwardIf the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration.downwardto the leftto the right?Submit Request Answerm/s²

Answered: An object with a charge of -3.3 μC and…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter15: Electric Forces And Fields

Section: Chapter Questions

Problem 22P: A small sphere of charge q = +68 C and mass m = 5.8 g is attached to a light string and placed in a...

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Item 3
An object with a charge of -3.3 μC and a mass of 4.7×10-² kg experiences
an upward electric force, due to a uniform electric field, equal in magnitude
to its weight.
For the steps and strategies involved in solving a similar problem, you may
view the following Example 19-16 video:
SOLUTION
In the x direction:
F0=-qE+mg, +T,
In the y direction
F-0=-qE, +mg, +7,
Free-body diagram
L.
-
T
O
▼
Part A
Find the magnitude of the electric field.
Express your answer in newtons per coulomb.
Π ΑΣΦ
E =
Submit
Part B
Request Answer
Find the direction of the electric field.
upward
O downward
O to the left
O to the right
Submit
Request Answer
?
N/C

▼
▼
Part C
If the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration.
Express your answer in meters per second squared.
|| ΑΣΦ
a =
Submit
Part D
Request Answer
upward
If the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration.
downward
to the left
to the right
?
Submit Request Answer
m/s²

Expert Solution

Step 1

Equate the electric force with the weight of object and susbtitute the corresponding values to calculate the magnitude of the electric field.

$\begin{array}{l} F = W \\ q E = m g \\ (- 3.3 \times 10^{- 6} C) E = (4.7 \times 10^{- 2} kg) (9.8 {m/s}^{2}) \\ E = - 1.396 \times 10^{5} N/C \\ | E | = 1.396 \times 10^{5} N/C \end{array}$

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