How many electrons are freed at the first dynode

Assignment Help Chemical Engineering
Reference no: EM131142578

In a photomultiplier tube, assume that there are seven diodes with potentials 100, 200, 300, 400, 500, 600, and 700 V. The average energy required to free an electron from the dynode surface is 10 eV. For each incident ectron released from rest, how many electrons are freed at the first dynode? At the last dynode?

Reference no: EM131142578

Questions Cloud

How do these compare to the corresponding amplitude results : How do these compare to the corresponding amplitude results?
What was the students associated perception : If the student was traveling at 55 mi/h when the sign was first spotted, what was the student's associated perception/reaction time (use practical stopping distance)?
Distinction between diplomatic and legislative immunity : xplain the distinction between diplomatic immunity and legislative immunity. Next, support or criticize the premise that diplomatic immunity is vital for Americans abroad
Tax cost of providing the public education : Public schools are financed by tax dollars and provide a certain level of education for every student who enrolls. The tax cost for the public school is the same whether one chooses to go to public school, or go to private school, so students going t..
How many electrons are freed at the first dynode : The average energy required to free an electron from the dynode surface is 10 eV. For each incident ectron released from rest, how many electrons are freed at the first dynode? At the last dynode?
Determine the grade of the road : Assuming standard perception/reaction time and practical stopping distance, determine the grade of the road.
Why do you suppose 131 53 i is used for this treatment : The radiation emitted by the source can destroy cancerous cells. Why do you suppose 131 53 I is used for this treatment?
Determine the drivers perception : Determine the drivers perception/reaction time before and after drinking - the driver fails to stop in time and strikes the object at a speed of 30 mi/h.
Which has the greatest penetration into tissue : Of the three basic types of radioaction-alpha, beta, and gamma-which has the greatest penetration into tissue? Explain the rationale behind your answer.

Reviews

Write a Review

 

Chemical Engineering Questions & Answers

  Write mass balancesfor the solute and the immobile reagent

The product may bemobile or immobile; since the reaction is irreversible, it does not matter. Thisreaction shows the solute's penetration across the film. Write mass balancesfor the solute and the immobile reagent.

  Find the effective molecular mass of the mixture

A mixture of perfect gases consist of 3kg of carbon monoxide and 1.5kg of nitrogen at a pressure of 0.1 MPa and a temperature of 298.15 K. Using table 5-1, find the effective molecular mass of the mixture.

  Is the proposed stead-state operation feasible

Is the proposed stead-state operation feasible - What is the corresponding length of wire that may be used in the heater for a maximum available voltage of 110V? What is the power rating of the heater?

  Why did experts recommend grounding these tanks and storing

the paint formerly used on some storage tanks contained aluminum powder which reflected heat from the surface of the

  Describe the electronic data processing steps needed

How have the technological advances in personal computing made this conversion faster and the speech output more lifelike?

  Compute the magnitude of the line-to-line voltage

Compute the magnitude of the line-to-line voltage at the terminals of the load.

  Find the value of r if the power dissipated by r

Determine the Thévenin and Norton equivalent circuits as viewed by the load resistance R in the network of Figure P2.1.1.

  How many poles does the motor have

At full load, find the speed of (i) the rotor field with respect to the rotor, (ii) the rotor field with respect to the stator, and (iii) the rotor field with respect to the stator field.

  What is monetary value of information from a consumer survey

What is the monetary value of the information from a consumer survey to the venture capital company in this case? (ie what is the maximum that they should spend on a consumer survey)?

  Producing a precipitate of fe

A mixture contains only NaCl and Fe(NO3)3. A 0.456-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Fe(OH)3. The precipitate is filtered, dried, and weighed. Its mass is 0.107 g.

  Calculate the amount of residue

A 30 mol% feed of benzene in toluene is to be distilled in a batch operation. A product having an average composition of 45 mol% benzene is to be produced. Calculate the amount of residue, assuming α = 2.5 and W0 = 100.

  Calculate the total pressure drop due to friction

The line is commercial steel pipe, 25 mm internal diameter, length 120 m. The properties of the fluid are: viscosity 0.99 mNm-2 s, density 998 kg/m3. Calculate the total pressure drop due to friction when the flow rate is 3500 kg/h

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd