P22_045.PDF

(50 KB) Pobierz
Chapter 22 - 22.45
45. The magnitude of the net force on the q =42
×
10 6 Cchargeis
k
0 . 28 2 + k |
q 1 q
q
0 . 44 2
q 2 |
where q 1 =30
×
10 9 Cand
|
q 2 |
=40
×
10 9 C. This yields 0 . 22 N. Using Newton’s second law, we
obtain
m = F
0 . 22N
a =
10 3 m / s 2 =2 . 2
×
10 6 kg .
100
×
643283636.001.png
Zgłoś jeśli naruszono regulamin