Answer:
a ) 270 N
b )413.65 N
Explanation:
weight of the refrigerator = reaction force ( R )
= mg
= 63 x 9.8
R = 617.4 N
Maximum friction possible
= coefficient of friction x R
= .67 X 617.4
= 413.65 N
When force 270 N is applied , due to friction, the body does not move .
The friction force adjusts itself to the external applied force to prevent the body to budge.
Hence the friction force acting in this situation = 270 N
b ) The maximum friction possible is 413.65 . If we apply a force equal to or exceeding 413.65 N , body will move. Hence 413.65 N is the answer.
I believe the answer would be D. environmental push and pull factors and cultural push and pull factors. Hope this helped! :)
H2O is an example of a compound
