Anegative point charge q is at the center of a hollow insulating spherical shell which has an inner radius r1 and an outer radius r2 there is a total charge of 3q spread uniformly throughout the volume of the insulating shell not just on its surface determine the electric field for the following use any variable or symbol stated above along with the following as necessary r and ε0

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply