Answer:
Explanation:
Velocity of plane relative to ground V_pg = ?
Given the velocity in vector form ,
velocity of plane relative to air V_pw = 120 cos30 i + 120sin30j
V_wg = 60 i
V_pg = V_pw +V_wg
= 120 cos30 i + 120sin30j + 60i
= 164 i + 60 j
magnitude
=251 km / h
=
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P=W/t
t=W/P
t=3,000,000 / 80,000
t= 37.5 second
Answer:
Negative
Explanation:
The respiratory plays a remarkable role in the regulation of CO2. It is responsible for gas exchange. The body gets rid of CO2 by breathing out. The goal of respiration is to decrease the CO2 levels.