Recent content by fal01

Thanks! I was just missing the negative sign.

so what I started doing was right... (40000V/m)(.3m) =12000 V when I put in that answer it says I am wrong :(

Homework Statement A proton is released from rest in a uniform electric field of magnitude 40000V/m di- rected along the positive x axis. The proton undergoes a displacement of 0.3 m in the di- rection of the electric field The mass of a proton is 1.672623×10−27 kg A.Find the...

This is an online homework. It says I got A right but B is wrong. I will go back through and check my math. I just wanted to make sure the process was right.

Thanks so much! I got it! :)

So now E1=8.76*10^7 E2=1.8*10^8 E3=9.66*10^6 so, Enet=E1-E2+E3 Did I get the signs right?

Homework Statement Two identical small metal spheres with q1 > 0 and |q1| > |q2| attract each other with a force of magnitude 70.2 mN, as shown. The spheres are then brought together until they are touching. At this point, the spheres are in electrical contact so that the charges...

I am guessing the r should be different for each one... E1=k*q1/r^2 r=.044m -.015m=.029m E2=k*q2/r^2 r=.015m E3=k*q3/r^2 r=.046m +.015m=.061m

Oh lol... Then I use E=F/q=kq/r^2 then do I calculate the E for each one? like so.. E1=k*q1/r^2 E2=k*q2/r^2 E3=k*q3/r^2 then what would r be?

Homework Statement Consider three charges arranged as shown. + + - 1 2 3 What is the magnitude of the electric field strength at a point 1.5 cm to the left of the middle charge? The value of the Coulomb constant is 8.98755 × 10^9N
m2/C2. Answer in units of N/C q1=8.2 µC= 8.2*10^-6...

So F(1 on 2)x=0 F(1 on 2) y=6.305*10^-4 but how do I apply this to F(q on 2) F(q on 2)x= F(q on 2) Cos 60 F(q on 2)y= F(q on 2) Sin 60 but F(q on 2)= k*Q*(2*10^-6)/(6.03)^2 and Q is unknown... also would 2F(q on 2)+F(1 on 2)=0

So something like this? F (1 on 2)= k (4.4*10^-)(2*10^-6)/(11.12)^2 F(q on 2)= k*Q*(2*10^-6)/(6.03)^2

Homework Statement Three point charges are located at the vertices of an equilateral triangle. The charge at the top vertex of the triangle is -4.4 µC. The two charges q at the bottom vertices of the triangle are equal. A fourth charge 2 µC is placed below the triangle on its symmetryaxis, and...

Two conducting spheres have identical radii. Initially they have charges of opposite sign and unequal magnitudes with the magnitude of the positive charge larger than the magnitude of the negative charge. They attract each other with a force of 0.231 N when separated by 0.5 m. The spheres are...