## PHYS208 Fundamentals of Physics II

### Answer for Ch. 23, 3E

to the right.

### Answer for Ch. 23, 17P

9:30

### Answer for Ch. 23, 22P

*E* = 2 sqrt(2) *k* *q* / *a*^{2}
direction is **up**.

numerical value: 1.02 x 10^{5} N/C

### Answer for Ch. 23, 52P

The final speed is 2.7 x 10^{-6} m/s.
The electric field has magnitude 1.0 x 10^{3} N/C.

### Answer for Ch. 23, 57P

The acceleration of the electron in the electric field is
3.5 x 10^{14} m/s^{2}, downward.
With that information this becomes a kinematics calculation, similar to a trajectory near the surface of the earth;
the electron hits the upper plate 2.73 cm from the edge.

"http://www.physics.udel.edu/~watson/phys208/exercises/answers/0213.html"

Last updated Feb. 17, 1998.

Copyright George Watson, Univ. of Delaware, 1997.