Answer:
a) 29.55 sec
Explanation:
Let the total distance be s feet.
Speed while walking = s/44 ft/sec.
Speed on sidewalk = s/90 ft/sec.
Total speed while walking on moving sidewalk
= s/44+s/90 = (90s+44s)/44×90
=(134x)/3960 ft/sec
= x/29.55 ft per sec.
Hence your travel time will be 29.55 secs.
6.25 - 8 = -1.75
Hope this helps
-AaronWiseIsBae
Answer: the particles are more orderly in region 1
Explanation: region 1 is when the substance is a solid and as it is heated the particles move further apart and have more kinetic energy.
10