A proton moves from point A to point B under the influence of an electric field only. At point A the proton moves with a speed of 50 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB− VA. A) +20V

What is the scientific definition of energy that relates to work

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?