3 charges, 1.0 µC each, are located on three vertices A, B, C of an equilateral triangle with sides 2 cm each. Another charge q is located at the mid point of the side BC. Calculate q so that net force on the charge at A due to the charges at B, C and D is zero

Ann walks 80 meters on a straight line 33 ∘ north of east starting at point 1. draw ann's path. represent ann's walk with a vector of length 80 meters. draw the vector starting at point 1. the length given in the display is in meters.

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?