Asked by jrfannin
A proton is held at a fixed position. An electron is placed 0.85m away and released.
Find the electron's speed when it's 9.0mm from the proton.
Find the electron's speed when it's 9.0mm from the proton.
Answers
Answered by
bobpursley
What is the difference in P between the two positions? That will be the gain of KE.
PE=kqq/r at each position, or
Pe=kqq(1/.85-1/.90)
set that equal to 1/2 mv^2 solve for v.
PE=kqq/r at each position, or
Pe=kqq(1/.85-1/.90)
set that equal to 1/2 mv^2 solve for v.