SuperTutor

(15)

$15/per page/Negotiable

About SuperTutor

Levels Tought:
Elementary,Middle School,High School,College,University,PHD

Expertise:
Accounting,Business & Finance See all
Accounting,Business & Finance,Economics,Engineering,HR Management,Math Hide all
Teaching Since: Apr 2017
Last Sign in: 235 Weeks Ago
Questions Answered: 12843
Tutorials Posted: 12834

Education

  • MBA, Ph.D in Management
    Harvard university
    Feb-1997 - Aug-2003

Experience

  • Professor
    Strayer University
    Jan-2007 - Present

Category > Physics Posted 23 May 2017 My Price 8.00

Part A (Electrostatics and electric current)

Question One (100%) Part A (Electrostatics and electric current) (25 marks) (a) Cathode Ray Tube (CRT) can be schematically represented by the following diagram. vertical displacement
(NOT to scale!) accelerating
plate at high
voflage screen (i) Calculate the escape velocity of electron (me = 9.1 x 10‘31 kg, q6 = 1.6 x 10’19 C)
when it is subjected to high voltage (20 kV) in the CRT. (8 marks) (ii) Suppose the CRT is placed horizontally on the working bench. Calculate the
amount of vertical displacement when the ejected electron in point (i) hits the
screen 1 meter from the electron source. (You may consider that gravitational force
is acting on the electron and there is no air resistance.) (7 marks) (iii)Explain why electronic engineers do not take the force of gravity into account when
calculating the trajectory of electrons in CRT. Which physical quantity is most
important in your discussion? (5 marks) (b) A young scientist experiments with the van de Graaff generator. As shown in the
Figure below: a lamp is held at one end in both a vertical and horizontal configuration
with respect to the generator. Explain why the horizontal one can lit the lamp but the
vertical one cannot. (5 marks)

Attachments:

Answers

SuperTutor
(15)
Status NEW Posted 23 May 2017 01:05 AM My Price 8.00

-----------

Attachments

file 1495502891-Solutions file.docx preview (56 words )
S-----------olu-----------tio-----------ns -----------fil-----------e -----------Hel-----------lo -----------Sir-----------/Ma-----------dam----------- T-----------han-----------k y-----------ou -----------for----------- yo-----------ur -----------int-----------ere-----------st -----------and----------- bu-----------yin-----------g m-----------y p-----------ost-----------ed -----------sol-----------uti-----------on.----------- Pl-----------eas-----------e p-----------ing----------- me----------- on----------- ch-----------at -----------I a-----------m o-----------nli-----------ne -----------or -----------inb-----------ox -----------me -----------a m-----------ess-----------age----------- I -----------wil-----------l b-----------e q-----------uic-----------kly----------- on-----------lin-----------e a-----------nd -----------giv-----------e y-----------ou -----------exa-----------ct -----------fil-----------e a-----------nd -----------the----------- sa-----------me -----------fil-----------e i-----------s a-----------lso----------- se-----------nt -----------to -----------you-----------r e-----------mai-----------l t-----------hat----------- is----------- re-----------gis-----------ter-----------ed -----------onÂ----------- th-----------is -----------web-----------sit-----------e. ----------- H-----------YPE-----------RLI-----------NK -----------&qu-----------ot;-----------htt-----------p:/-----------/wo-----------rkb-----------ank-----------247-----------.co-----------m/&-----------quo-----------t; -----------\t -----------&qu-----------ot;-----------_bl-----------ank-----------&qu-----------ot;----------- -----------Tha-----------nk -----------you----------- -----------
Not Rated(0)