Question: Having been operated long enough, the ionizer producing nt = 3.5.109 cm-3 s-1 of ion pairs per unit volume of air per unit time was

Having been operated long enough, the ionizer producing nt = 3.5.109 cm-3 ∙ s-1 of ion pairs per unit volume of air per unit time was switched off. Assuming that the only process tending to reduce the number of ions in air is their recombination with coefficient r = 1.67.10-8 cm2/s, find how soon after the ionizer's switching off the ion concentration decreases η = 2.0 times.

Step by Step Solution

★★★★★

3.68 Rating (163 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Initially n no n r Since we can assume that the long exposure ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

P-E-E-C (171).docx

120 KBs Word File

Students Have Also Explored These Related Electricity and Magnetism Questions!

In Figure a, switch S has been closed on A long enough to establish a steady current in the inductor of inductance L1 = 5.00 mH and the resistor of resistance R1 = 25.0??. Similarly, in Figure b,...

Air is heated as it flows subsonically through a 10 cm = 10 cm square duct. The properties of air at the inlet are maintained at Ma1 = 0.4, P1 = 400 kPa, and T1 = 360 K at all times. Disregarding...

Air at 540 F, 60 lbf/in 2 with a volume flow 40 ft3/s runs through an adiabatic turbine with exhaust pressure of 15 lbf/in 2. Neglect kinetic energies and use constant specific heats. Find the lowest...

GLOBAL SOURCING AT NIKE 1. Identify the Ethical dilemma in the case 2. Alternatives to Ethical Dilemma 3. Conclusion of the Case NaE.N-HE MSIE.A MicaA at. W. Tcozsi.1. C.HviA Hu i. Global Sourcing at...

Group: PERON A+ PERSON B +PERSON C 1- Introduction 2- Literature a. Definition of operation management b. Definition of operation strategy and why it is important c. Components of operations strategy...

Project Management Casebook David I. Cleland, Karen M. Bursic, Richard Puerzer, and A. Yaroslav Vlasak Library of Congress Cataloging-in-PublicationData Project management casebook /edited by David...

answer the following questions: What are your moral obligations as professionals to prevent such things from happening? What guidance do the professional codes provide (cite specific code sections in...

PLEASE COMPLETE NO LATER THAN 10/14 @3:30PM Each question(1,2,& 3) must be a minimum of 200 words. Please EXPLAIN answers in FULL detail and make answers knowledgeable based off the attached reading,...

With a classmate, choose one of the following not-for-profit organizations. Then come up with a for-profit firm with which you think your organization could form a strategic alliance. Create a...

Use the information provided below to answer the following questions: 5.1 5.2 5.3 5.4 5.5 Calculate the Payback Period of Machine B (expressed in years, months and days). Calculate the Accounting...

11. Carry out your own usage analysis of the Telesales process. How does it compare with the analysis given in Sect. 8.4 (h)? Who should be responsible for analyzing the usage of a business process?

On January 1, 2012, the first day of its fiscal year, the City of Carter received notification that a federal grant in the amount of $650,000 was approved. The grant was restricted for the payment of...

Effect of LIFO on financial statements over several periods. Harmon Corporation commenced operations on January 1, 2008. It uses a LIFO cost-flow assumption. Its purchases and sales for the first...

Dollar-Value LIFO The dollar-value LIFO method was adopted by King Corp. on January 1, 2010. Its inventory on that date was $160,000. On December 31, 2010, the inventory at prices existing on that...

In recent years, Harper Transportation purchased three used buses. Because of frequent employee turnover in the accounting department, a different accountant selected the depreciation method for each...

As one aspect of its business, New Lawn Company currently rents a ditch-digging machine for an average of $35 per job. A used machine is available for $995 but would cost $200 to repair. The machine,...

When solutions of BaCl 2 and Na 2 SO 4 are mixed, the mixture becomes cloudy. After a few days, a white solid is observed on the bottom of the beaker with a clear liquid above it. (a) Write a...

Question 11 Cash flows from net income. 0/4 points activities are generally the cash effects of transactions and other events that enter into the determination of 1) financing 2) investing 3)...

An important factor in selling a residential property is the number of times real estate agents show a home. A sample of 16 homes recently sold in the Buffalo, New York, area revealed the mean number...

Yeatman Co. is considering an investment that will have the following sales, variable costs, and fixed operating costs: This project will require an investment of $15,000 in new equipment. The...