Question

The sum of 1 +1/3+1/32 + 1/33 + ... +1/3 n-1 is
(a) 2/3
fet 3/2
(c) 4
1
212 4/9 +
is​

Answer 1

Answer:

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.