An electrostatic paint sprayer contains a metal sphere at an electric potential of 25.0 kV with respect to an electrically grounded object. Positively charged paint droplets are repelled away from the paint sprayer's positively charged sphere and towards the grounded object. What charge must a 0.168-mg drop of paint have so that it will arrive at the object with a speed of 18.8 m/s

The charge is  

Explanation:

From the question we are told that

     The electric potential is  

     The  mass of the drop is  

      The  speed is  

Generally the charge on the paint drop due to the electric potential which will give it the speed stated in the question  is mathematically represented as

Substituting values

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.