Physics Lover

Two fixed, non-conductive, isolated rings of radii 25 cm are electrified and brought close to each other so that they are parallel. The distance between them is 1 m. You know that one of them has a charge of 1 nC(Nano Coulomb) evenly distributed on it, bu...

A concave spherical mirror has a radius of curvature of 18 cm. Locate the images for object distances as given below. In each case, state whether the image is real or virtual and upright or inverted, and find the magnification. (If an answer does not exis...

You throw a 238 g baseball straight up from a height of 1.73 m and it reaches a height of 13.2 m. Using conservation of energy, what minimum initial speed is needed to accomplish this?

A merry-go-round has an angular velocity of 5.20 rad/s. A ribbon is tied at the end of one of the arms and it has speed of 3.60 m/s. At what distance is the ribbon from the center of the merry-go-round?

A washing machine needs 17.9 s to speed up from rest to top speed of 5 rotation for every 2.78 s. If the damp cloths inside are 7.13 cm from the center, what is it's radial acceleration at top speed?

A military jet is flying at 224 m/s in a tight circular turn. If the military jet reaches a centripetal acceleration of 8.00 times the free-fall acceleration, what must the radius of its turn be?

I solved it like this let charge of the ball be Q let charge of unkown ring be Q2 let the place where there is equilbrium be P. This point P is 0.25m from the ring with known charge and and hence 0.75m from the ring with unknown charge. Now applying coulo...

Hey elena but why is my method wrong ?

Yeah the answer is wrong so what should be correct ?

i think its 5157.9442 radians

Thanks!