Answer:
8) d
9) c
<em>Hope this helps! :)</em>
Vectors need direction and magnitude to exist, otherwise, it becomes scalars that do not require direction to be expressed.
eg - Velocity is a vector as it needs direction, but speed is scalar and does not need direction
hope this helps
Answer:
A. 6.36 lbm/s
b. 
Explanation:
a. Given the following information;
#Compressor inlet:
Air pressure,
#Compressor outlet:

#Cooling rate,

# From table A-1E
Gas constant of air 
Specific enthalpy at 
Using the mass balance:

Hence, the mass flow rate of the air is 6.36lbm/s
b The specific enthalpy at the exit is defined as the energy balance on the system:

Hence, the temperature at the compressor exit 