Two balloons are charged with an identical quantity and type of charge -0.0025 C. They are held apart at a separation distance of 8m. Determine the magnitude of the electrical force of repulsion between them ?

Why is there friction between objects

Need in all of themmm only answer if you know plsssss

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?