# LAB PREP #5

Page 1 of 2 ## LAB PREP #5

did anyone get #4 and 5 and the equation for v?

frusty s
Guest

## ques 1

anyone figure out how to do this part?

Subsitute the equation for the velocity v into the equation for the radius r and then solve for e/m in terms of the accelerating voltage V and the magnetic field B.
e/m =

gah
Guest

## Re: LAB PREP #5

Question 1:
KE = (q*V)
v = sqrt((q*V)/(.5*m))
r= (m*v)/(q*B)
e/m = ?
and I didnt get the last part of that yet

Question 2:
B = 2*pi*k*(I/a)
B = N*(2*pi*k*(I/a))
B = 2*(N*(2*pi*k*(I/a)))

## Question #1

for #1, e/m=(2*V)/(B^2*r^2)

frusty s
Guest

## Question #3,4,&5

did anyone get #3,4,and 5?

frusty s
Guest

## Re: LAB PREP #5

#3)

a=(1/2)*((2*a_v1)+(2*a_v2)+(2*a_h1)+(2*a_h2))/4

I can't get the 2nd part of #3 (deltaa), #4 or #5... can anybody help me?

me
Guest

## Question 3

a=((a_v1+a_v2)+(a_h1+a_h2))/4

dont know about delta a...

=]
Guest

## Re: LAB PREP #5

#3)

a=(1/2)*((2*a_v1)+(2*a_v2)+(2*a_h1)+(2*a_h2))/4

I can't get the 2nd part of #3 (deltaa), #4 or #5... can anybody help me?

me
Guest

## Question 3

a=((a_v1+a_v2)+(a_h1+a_h2))/4

dont know about delta a...

=]
Guest

## #3,4,5

Can someone please help with number 4 and 5? or the second part of #3 deltaA?

sjames
Guest

## Re: LAB PREP #5

2*(sqrt((Deltar/r)^2))

For number 4 I thought it would be this, but its not working... Suggestions

S
Guest

## #3

delta a = delta d

supr mo
Guest

## Re: LAB PREP #5

anyone got #4 and 5

thanx

Maria
Guest

## #4&5

Working on these 2 for 2 1/2 MF'in hours!!! I thought the labs were supposed to take less time. When/if I get it, I will post it. Studying for other exams - I DON'T THINK SO!

super mo
Guest

## #4

#4:
2*(Deltar/r)*((I*r)^2)

Guestttt
Guest

## question #5

delta(e/m)=sqrt((Deltas/s)^2+(2*Deltaa/a)^2)*(e/m)

ryan240
Guest

## Re: LAB PREP #5

Hey wat was delta a for number 3? thanks

hey111
Guest

## Numba 3 DeltaA

Hey guys what is the answer to deltaA?????

goo
Guest

## #5

For #5 I entered this:
(sqrt((Deltas/s)^2 +(Deltaa/a)^2))*(e/m)
and it is incorrect, can anyone help me

Guest

## Re: LAB PREP #5

second part for # 3 anyone plz

delta a = deltad

guest17
Guest

## Q #4 #5

doesw any have Q #4 and #5? hanks

phen
Guest

## nevermind got it

nevermind i got it
#5
delta(e/m)=sqrt((Deltas/s)^2+(2*Deltaa/a)^2)*(e/m)

#4
2*(Deltar/r)*((I*r)^2)

phent
Guest

## #5

the #5 answer posted by phent is not working....

phygirl
Guest

## #5

my bad... yeah it does. i entered the whole thing without realizing that the answer was just:

#5: sqrt((Deltas/s)^2+(2*Deltaa/a)^2)*(e/m)

thx

phygirl
Guest

## Re: LAB PREP #5 