A1.0-c point charge is 15 m from a second point charge, and the electric force on one of them due to the other is 1.0 n. what is the magnitude of the second charge?

Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

Observations show that interstellar clouds can have almost any shape and