What is the acceleration of a proton in a uniform electric field of 640 N/C?

[ballahboy]

A proton accelerates from rest in a unifor electric field of 640 N/C. At some later time, its speed is 1.20X10^6m/s. Find the magnitude of the acceleration of the proton.

Hmm.. not sure what formula to use on this one.. can someone help?

 

[christinono]

A proton accelerates from rest in a unifor electric field of 640 N/C. At some later time, its speed is 1.20X10^6m/s. Find the magnitude of the acceleration of the proton.

Hmm.. not sure what formula to use on this one.. can someone help?

You can use the formulae:

F_{net} = ma

E = \frac{F}{q}

 

[ballahboy]

hmm I am lookin for a right? so what am i suppose to plug in for m and q?
im confused..

 

[christinono]

hmm I am lookin for a right? so what am i suppose to plug in for m and q?
im confused..

m = the mass of a proton
q = the charge of a proton

 

[ballahboy]

yeah i got that but its not given in the problem..

 

[christinono]

Don't you have a data sheet in your book. If not, I can give the values to you.

 

[ballahboy]

hmm.. is it m=1.67x10^-27? what is q?

 

[christinono]

hmm.. is it m=1.67x10^-27? what is q?

Yes, and q is 1.60 \times 10^{-19}C

 

[ballahboy]

ok thanks a lot! i reallly appreciate it :-D

 

[christinono]

glad i could help