Answer:
All the time and to see if someone is behind you.
Explanation:
After you check your side mirrors you should check your review mirror to see who is behind you.
Answer:
See explaination
Explanation:
Kindly check attachment for the step by step solution of the given problem.
Answer:
2062 lbm/h
Explanation:
The air will lose heat and the oil will gain heat.
These heats will be equal in magnitude.
qo = -qa
They will be of different signs because one is entering iits system and the other is exiting.
The heat exchanged by oil is:
qo = Gp * Cpo * (tof - toi)
The heat exchanged by air is:
qa = Ga * Cpa * (taf - tai)
The specific heat capacity of air at constant pressure is:
Cpa = 0.24 BTU/(lbm*F)
Therefore:
Gp * Cpo * (tof - toi) = Ga * Cpa * (taf - tai)
Ga = (Gp * Cpo * (tof - toi)) / (Cpa * (taf - tai))
Ga = (2200 * 0.45 * (150 - 100)) / (0.24 * (300 - 200)) = 2062 lbm/h
Answer You ask your coach
Answer:
Tension can be easily explained in the case of bodies hung from chain, cable, string
Explanation
uniform speed, tension; T = W.
T=m(g±a)