Answer:
Explanation:
At initial condition
P=2 MPa
T=30°C
V=25 m/s
At final condition
P=0.3 MPa
Now from first law for open system
We know that for air
h= 1.010 x T KJ/kg
-----1
Now from mass balance
We also know that
----------2
Now from equation 1 and 2
So we can say that
This is the outlet velocity.
Now by putting the values in equation 2
This is the outlet temperature.
Answer:
kinematics
the branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion
Answer:
for question no.4,
time =6 secs
acceleration due to gravity (g)= 9.8 m/s^2
velocity=gt
=6×9.8
=58.8m ans...
for question no .5,
time taken = 4seconds
aacceleration due to gravity (g)=9.8 m/s^2
distance=12gt
=12×9.8×4
=470.4meter answer...