The electric field just outside the surface of a hollow conducting sphere of radius 20 cm has a magnitude of 500 n/c and is directed outward. an unknown charge q is introduced into the center of the sphere and it is noted that the electric field is still directed outward but has decreased to 100 n/c. what is the charge q?

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.