Answer:
8 UNITS
Step-by-step explanation:
12/8 = k/6
4/3 = k/6
24 = 3k
k = 8
Answer:
(a) 62.5 N
(b) 694.4 N/m
(c) 41.7 N
Step-by-step explanation:
Work done in stretching a spring is
since 
F is the applied force, E is the elongation and k is the spring constant.
(a) Here, e = 16 cm = 0.16 m


(b) Here, e = 12 cm = 0.12 m


(c) The restoring force is the same as the applied force.

$9.10 each boxed lunch
work:
81.90 divided by 9 equals 9.10
Answer: I think its d if im wrong im so sorry