Four charges are at the corners of a square centered at the origin as follows:
q at (-a , +a); 2q at (+a , +a); 3q at (+a , -a) and 6q at (-a , -a).
A fifth charge +q is placed at the origin and released from rest.
Find its speed when it is a great distance from the origin if a = 0.6 m, q = 3.8 mC and its mass is 0.8 kg.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?