A woman has a mass of 60 kg. she is standing on a floor and remains at rest (Fig3.2). Find the normal force exerted on her by the floor?

the answer is d

lies a supermassive black hole called sagittarius a*, or sgr a* for short.

answer; i believe that the correct answer is (d) a very small amount of mass

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)