iPad 4:44 PM * 32%. WileyPLUS Cutnell, Physics, 10e GENERAL PHYSICS I ⅈ (PHYS

Question

iPad 4:44 PM * 32%. WileyPLUS Cutnell, Physics, 10e GENERAL PHYSICS I ⅈ (PHYS 110/112) Home Read, Study& Practice Gradebook ORION Downloadable eTextbook Assignment>Open Assignment MESSAGE MYZNSTRUCTOR FULL SCREEN PRINTER VERSION BACK Chapter 18, Problem 39 HW 18-2 A tiny ball (mass = 0.016 kg) carries a charge of-20c. what is the electric field magnitude that would cause the ball to float above the ground? Question 11 Chapter 18, Problem 33 Number Units Use correct number of significant digits; the tolerance is +/-296 Show Work is REQUIRED for this question: Open Show Work objective By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor Question Attempts: 0 of 4 used SAVE FOR LATER SUBMIT ANSWER Earn Maximum Points available only if you answer this question correctly in three attempts or less

Explanation / Answer

For floating. The weight should be balanced by electric field force.

Here I am taking the value of g is 9.8

So mg =qE

. 016*9.8=20*10^(-6)*E

E = 7840 N/C

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