A proton and an alpha particle (charge _ 2e, mass _ 6.64 _ 10_27 kg) are initially at rest, separated by 4.00 _ 10_15 m. (a) If they are both released simultaneously, explain why you cant fi nd their velocities at infi nity using only conservation of energy. (b) What other conservation law can be applied in this case? (c) Find the speeds of the proton and alpha particle, respectively, at infi nity.
Chapter 5 – Work and Energy Work o Forces do work o Work is ascalar quantity o The work done by a force on an objec that moves it along the xis W=F (Δx) o Work on an object gives it rgy Work is a pe of energy transfe done with orces It transfers ergy into/out of a system Pushing or ulling All energy has to be accounted for, it has to be conserved PAPER NOTES 1 o If force and displacement point in the same direction W=F (Δx)∨W=F(d) o If the force is at an angle W= (
