Q. A 3.50 x 10^2 N child is in a swing that is attached to ropes 1.75 m long. find the gravitational potential energy associated with the child relative to her lowest postion when a) the ropes are horizontal, b) the ropes make a 30.0 degree angle with the vertical, and c) the child is at the bottom of the circular arc.
Q. The net electric flux through each face of a die has magnitude in units 10^3 Nm^2/C equal to the number N of spots on the face. The flux is inward for N odd and outward for N even. What is the net charge inside the die?