# Grade 12 physics

Grundy
5. A particle with a charge of -4.00 × 10-6 C moves through a uniform electric field of 70.0 N/C directed downwards. It is moving horizontally at 12.0 cm/s exactly between two plates that are 10.0 cm apart. The particle has a mass of 0.0400 g.
a. What is the net force on the particle?
b. What is the acceleration of the particle?
c. How long will it take to strike one of the plates?

## Answers and Replies

Homework Helper
Okay,what did u do so far?

Daniel.

Grundy
so far i have drwn a diagram to what i am dealing with...i am stuck after that

Homework Helper
a)What is the formula connecting the Coulomb force & the electric (electrostatic) field E...?

b)What is the connection between force & acceleration...?

c)What kind of dynamics does the charge have in a constant electric field...?

Daniel.

whozum
What are the forces acting on it? There is a uniform electric field and a charge travelling through.

TimNguyen
dexter posted those three EXTREMELY helpful hints for you. Each of those statements consists of a formula within your textbook/notes. Look for them.

Grundy
thanks for the help.. i got it right on the work sheet..thanks a lot