Answer:
b
Step-by-step explanation:
Answer is C
<3 and <7
-----------
Answer:
the answer is $6520.02
Step-by-step explanation:
explanation linked as image
Answer:
Step-by-step explanation:
slope, m = 0.1m/4m = 0.025
Theoretical effort (ignoring friction) = 9000N * 0.025 = 225 N
actual effort = 300 N
efficiency
= potential energy out / actual energy in
= 225 N / 300 N = 0.75