Answer:
Ordinary window glass cannot withstand the high temperatures associated with a structure fire, and it will break and fall out of its frame at about 250° F, only a few minutes into a fire. On the other hand, glass that is classified as "fire-rated" for at least 60 minutes can tolerate heat in excess of 1600° F
Answer:
b) 300.3 ft if the vehicle is travelling at 40 mi/hour
423.4 ft if the vehicle is travelling at 50 mi/ hour
Explanation:
First Step:
Calculate the distance traveled during braking for level road () using the formula:
Deceleration rate is considered 11.2 ft/s² (AASHTO recommendations)
a=11.2 ft/s²
=1^2/2=(50 mi/h×5280 ft/1 mi×1 h/3600 s)²/22×11.2=240.07 ft
2nd Step:
Calculate distance traveled during perception /reaction (dr ) using the formula:
Standard Reaction time is 2.5 sec ( AASHTO )
= 2.5 sec
=1×=(50 mi/h×5280 ft/1 mi×1 h/3600 s)×2.5=183.33 ft
Third Step:
Stopping distance would be:
=+=240.07+183.33 = 423.4 ft
Thus, the correct answer is b if the vehicle is travelling at 40 mi/hour
C because i know what i’m taking about
Answer:
Hook's law holds good up to. A elastic limit. B. plastic limit. C.yield point. D.Breaking point