Recent content by azila

Thanks for the sites, which I understand. But I know how to get the electric force in the +x direction but not in the -x direction. Could I do that to make it go in the -x direction, the charge of q1 could be +4.00 nC since electric field lines go away from positive charges? Any help would be...

Homework Statement A negative point charge q1 = -4.00 nC is on the x-axis at x = 0.60 m. A second point charge q2 is on the x-axis at x=-1.20 m. What must the sign and magnitude of q2 be for the net electric field at the origin to be 50.0 N/C in the +x direction be? What must the sign...

Homework Statement Two particles having charges q1 = 0.600 nC and q2=5.50 nC are separated by a distance of 1.10 m. At what point along the line connecting the two charges is the total electric field due to the charges equal to zero? Homework Equations Coulomb's Law The Attempt...

ok, i got the magnitude but the angle is not working. I get 63 and then i subtracted from 90 to get Counterclockwise, to be 27 but it does not work..

oh so it doesn't matter that they have the same charges... is that right?

Homework Statement Two Positive charges q1 = q2= 2.0 microC are located at x=0, y = .30 m and x =0, y =-.30m. Third point charge Q =4.0 microC is located at x=.40 m, y = 0. What is the net force magnitude and the direction on charge q1 exerted by the other two charges. Homework Equations...

ok, i don't understand...could you explain it in other words...please

I tried that, so I took the derivative of 1.24(1/L) and then integrated from 0 to 1.50 and did not work...any other explanation or is there something i am missing

would i use the equation, change in frequency = frequency toward - frequency away..

Homework Statement A 1740-N irregular beam is hanging horizontally by its ends from the ceiling by two vertical wires (A and B), each 1.30 m long and weighing 2.80 N. The center of gravity of this beam is one-third of the way along the beam from the end where wire A is attached. If you pluck...

Homework Statement A 1.50-MHz sound wave travels through a pregnant woman’s abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as the heart beats. The reflected sound is then mixed with the transmitted sound, and 85 beats...

ok, i did what you said about the 2pi but even if I did that, I get the same velocity. My answer then is 23.8 s when I do velocity divided by length. And, yes by tension of the string do you mean like just multiplying the mass of the rope by 9.8m/s^2, I did that and that does not seem to...

Homework Statement A 1.50 m string of weight 1.24 N is tied to the ceiling at its upper end, and the lower end supports a weight W. When you pluck the string slightly, the waves traveling up the string obey the equation y(x,t) = (8.50 mm)cos(172m^-1x - 2730s^-1t) How much time does it take a...

thanks alot!

Homework Statement A holiday ornament in the shape of a hollow sphere with mass 2.0×10−2 kg and radius 5.5×10−2 m is hung from a tree limb by a small loop of wire attached to the surface of the sphere. If the ornament is displaced a small distance and released, it swings back and forth as a...