Answer:
0.45516
Explanation:
ENTROPY : Entropy is a measure of molecular disorder it is denoted by S. Entropy is also measured in terms of thermal energy and temperature it is equal to thermal energy per unit temperature.
from the table S₁=1.99194 KJ/kg.k (at 400k)
from the table S₂=2.21952 KJ/kg.k (at 500k)
so total entropy change is given by =m (S₂-S₁)
=2(2.21952-1.99194)
=0.45516
The acceleration of the car is 1.125 m/s².
Explanation:
Acceleration refers to the change in velocity of an object per unit time.
There are three basic formulae linking initial velocity ("u"), final velocity ("v"), distance ("s"), time ("t") and acceleration ("a"). They are-
- v²=u²+2as
- s =u*t+¹/₂(a*t²)
- v =u+a*t
All the variable carry the meaning as explained above using formula no 1
Since the car starts from rest (initial velocity "u"=0)
Putting "u"=0 in the formula 1
we get v²=2*a*s
Thus acceleration "a" can be written as a=v²/2s
Putting the value of "v" as 15 m/s and s= 100 m (given in the question)
a=15*15 /(2*100)
a=1.125 m/s²
Thus the acceleration of the car is 1.125 m/s²
Answer: Focusing on the road
Explanation:
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