Answer:
change in entropy is 3.3034 ×
Explanation:
give data
thermal energy Q = 155 J
temperature T = 340 K
to find out
change in entropy
solution
we know change in entropy formula that is
change in entropy = Q / ( K×T ) ..............1
here K is boltzmann constant that is 1.38 × kg-m²/s²
put these value in equation 1 we get
change in entropy = Q / ( K × T )
change in entropy = 155 / ( 1.38 × × 340 )
change in entropy = 3.3034 ×
so change in entropy is 3.3034 ×
Answer:
The true velocity of wind will be 43.1 km/h.
Explanation:
Given that,
Velocity of motor
The resultant velocity of wind
Suppose, the true velocity of wind is .
We need to calculate the true velocity of wind
Using formula of resultant velocity
Where, = velocity of motor
= velocity of wind
= resultant velocity
Put the value into the formula
The magnitude of true velocity is,
Hence, The true velocity of wind will be 43.1 km/h.
It would be "Double replacement".
Hope this helps!
We make a graphic of this problem to define the angle.
The angle we can calculate through triangle relation, that is,
With this function we should only calculate the derivate in function of c
That is the rate of change of .
b) At this point we need only make a substitution of 0 for c in the equation previously found.
Hence we have finally the rate of change when c=0.