Project #38655 - need help 2

Four charged particles are at the corners of a square of side a as shown in the figure below. (Let A = 4B = 5, and C = 3.)

(a) Determine the electric field at the location of charge q. (Use the following as necessary: qa, and ke.)
magnitude  
direction  ° (counterclockwise from the +x-axis)

(b) Determine the total electric force exerted on q. (Use the following as necessary: qa, and ke.)
magnitude  
direction  ° (counterclockwise from the +x-axis)

_________________________________________________________________

2)A uniform electric field of magnitude 614 N/C exists between two parallel plates that are 4.22 cm apart. A proton is released from rest at the positive plate at the same instant an electron is released from rest at the negative plate.

(a) Determine the distance from the positive plate at which the two pass each other. Ignore the electrical attraction between the proton and electron.
 m

(b) Repeat part (a) for a sodium ion (Na+) and a chloride ion (Cl).
 cm
__________________________________________________________
A proton accelerates from rest in a uniform electric field of 620 N/C. At one later moment, its speed is 1.10 Mm/s (nonrelativistic because v is much less than the speed of light).
(a) Find the acceleration of the proton.
 Correct: Your answer is correct. m/s2

(b) Over what time interval does the proton reach this speed?
 Correct: Your answer is correct. s

(c) How far does it move in this time interval?
 Correct: Your answer is correct. m

(d) What is its kinetic energy at the end of this interval?
 Incorrect: Your answer is incorrect. 

Subject Science
Due By (Pacific Time) 08/28/2014 11:00 am
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