Problem 22.30 Part A What is the strength of an electric field that will balance

A)q*E = m*g E = m*g/q use this formula put value = 5.4*10^-3*9.8/1.4*10^-9 = 3.78*10^7N/c B) downward

ID: 1526463 • Letter: P

Question

Problem 22.30

Part A

What is the strength of an electric field that will balance the weight of a 5.4 g plastic sphere that has been charged to -1.4 nC ?

Express your answer to two significant figures and include the appropriate units.

Part B

What is the direction of an electric field that will balance the weight of a 5.4 g plastic sphere that has been charged to -1.4 nC ?

What is the direction of an electric field that will balance the weight of a 5.4 plastic sphere that has been charged to -1.4 ?

-upward

E =

A)q*E = m*g

E = m*g/q

use this formula

put value

= 5.4*10^-3*9.8/1.4*10^-9

= 3.78*10^7N/c

B) downward

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