The electric charge (in Coulombs, C) in a spherical surface leak at a rate proportional to the amount present. The initial charge is 7C and 2/5 of it leaks off in 15 minutes. Which of the following is the particular solution? 14/5 exp(-0.06108604879t) 7 exp(-0.03405504158t) 14/5 exp(-0.03405504158t) 7 exp(-0.06108604879t) At what time will the charge be half of its original value? 20.35 mins 13.35 mins 18.35 mins 11.35 mins

The electric charge (in Coulombs, C) in a spherical surface leak at a rate proportional to the amount present. The initial charge is 7C and 2/5 of it leaks off in 15 minutes. Which of the following is the particular solution? 14/5 exp(-0.06108604879t) 7 exp(-0.03405504158t) 14/5 exp(-0.03405504158t) 7 exp(-0.06108604879t) At what time will the charge be half of its original value? 20.35 mins 13.35 mins 18.35 mins 11.35 mins

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter2: Atoms, Chemical Bonding, Material Structure, And Physical Properties

Section: Chapter Questions

Problem 2.26P

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Question

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The electric charge (in Coulombs, C) in a spherical surface leak at a rate proportional to the amount present. The initial charge is 7C and 2/5 of it leaks off in 15 minutes.

Which of the following is the particular solution?

14/5 exp(-0.06108604879t)

7 exp(-0.03405504158t)

14/5 exp(-0.03405504158t)

7 exp(-0.06108604879t)

At what time will the charge be half of its original value?

20.35 mins

13.35 mins

18.35 mins

11.35 mins

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