A sports car is traveling at a constant speed and travels 110m in 5 s. more after he brakes and stops after 4s.
a) What is the acceleration in each part of the movement?

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

electromagnetic waves travel through space with vacuums. give me brainliest if right.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge