phys urgent!
posted by kenzie .
A particle leaves the origin with a speed of 2.4 times 10^6 m/s at 38 degrees to the positive x axis. It moves in a uniform electric field directed along positive y axis. Find Ey such that the particle will cross the x axis at x = 1.5 cm if the particle is an electron.
I don't know what I am doing wrong on this problem. So I used the equation y(t)= y0 + v0t + ((1/2)qEt^2)/m
I rearranged it to solve for E in terms of t and got E= 2.733e5/t then I plugged in the t I got from finding x=vxt=1.5cm
My answer came out to be 3.44e3 N/C

I do not have time to run your numbers but your approach is correct.
constant Vx = 2.4*10^6 cos 38
so t = .015 /Vx
Vyi = 2.4*10^6 sin 38
y = Vyi t (1/2)(qE/m) t^2 = 0 at x axis
Respond to this Question
Similar Questions

physics
In the figure, particle A moves along the line y = 29 m with a constant velocity of magnitude 3.5 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with zero initial speed and … 
Physics
In the figure, particle A moves along the line y = 26 m with a constant velocity of magnitude 2.6 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with zero initial speed and … 
Physics
A particle with an initial linear momentum of 2.28 kg · m/s directed along the positive xaxis collides with a second particle, which has an initial linear momentum of 4.56 kg · m/s, directed along the positive yaxis. The final … 
Physics
particle A moves along the line y = 30m with a constant velocity of magnitude 3.5 m/s and parallel to the x axis. At the instant particle A passes the y axis, particle B leaves the origin with 0 initial speed and constant acceleration … 
PHYSICS PLEASE HELP ME
A particle with an initial linear momentum of 3.44 kg · m/s directed along the positive xaxis collides with a second particle, which has an initial linear momentum of 6.88 kg · m/s, directed along the positive yaxis. The final … 
science
A particle leaves the origin with a speed of 2.4 times 106 m/s at 38 degrees to the positive x axis. It moves in a uniform electric field directed along positive y axis. Find Ey such that the particle will cross the x axis at x = 1.5 … 
Physics
At a point P, the electric field is 78 N/C at 51° counterclockwise from the positive x axis. A particle of mass 4.7 kg and charge 0.11 C is located at P. Find: 1.the magnitude of the force on the particle 2.the direction of the … 
physics
At a point P, the electric field is 78 N/C at 51° counterclockwise from the positive x axis. A particle of mass 4.7 kg and charge 0.11 C is located at P. Find the direction of the force on the particle: ___ degrees counterclockwise … 
Physics
An unstable nucleus with a mass of 18.0 ✕ 1027 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.1 ✕ 1027 kg, moves along the positive yaxis with a speed of 8.0 ✕ 106 m/s. … 
physics
An unstable nucleus with a mass of 18.0 ✕ 1027 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.0 ✕ 1027 kg, moves along the positive yaxis with a speed of 9.0 ✕ 106 m/s. Another particle, …