Answer: d
Explanation: Did it on Ed2020 got it right
Answer:
Gregory's apartment catches fire, and he has to replace his sofa. Which policy will most likely cover the cost of replacing the sofa
Answer:
A. 800 J
B. - 360 J
C. 440 J
Explanation:
Applied force, F = 200 N
Friction force, f = 90 N
Distance, d = 4 m
Work done = Force x distance x cos θ
where, θ be the angle between the force and distance.
A. W = Applied force x distance = 200 x 4 x cos0 = 800 J
B. W = frictional force x distance = 90 x 4 x cos 180 = - 360 J
C. Total work done = 800 - 360 = 440 J
D) Sound travels better through the compact molecules of air inside the balloon than the less compact molecules on the outside.
