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Homework Statement
In Fig. 22-56 an electron is shot at an initial speed of v0 = 4.14 × 106 m/s, at angle θ0 = 43.6 ˚ from an x axis. It moves through a uniform electric field = (5.34 N/C). A screen for detecting electrons is positioned parallel to the y axis, at distance x = 1.64 m. What is the y component of the electron's velocity (sign included) when the electron hits the screen?
http://edugen.wileyplus.com/edugen/courses/crs4957/art/qb/qu/c22/q50.jpg
Given:
θ=43.6˚
Vi=4.14 E 6 m/s
E=5.34 N/C
x=1.64 m
Homework Equations
E=(KQ)r^2
The Attempt at a Solution
What I first decided to do was try breaking V into x and y components..
x direction: 4.14 E6 (cos 43.6) ≈2.998 E 6
y direction: 4.14 E6 (sin 43.6) ≈ 2.855 E 6
After I did that I started to get confused on what other step I should take. Would I add the vector E to Y component then use basic trig to find the height at that x distance?
Help, please and thanks :)