Two equal positive changes q¹=q²= 2.0micro coulombs are located at x=0, y=0.30metres and x=0, y= -0.30metres respectively. what are the magnitude and direction of the electric force that q¹ and q² exerts on a third charge q³= 4.0 micro coulombs (at x= 0.40 metres and y= 0)​

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

What equation is used to calculate the weight of an object on a plant ?

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.