The mass of 1 cubic meter of air at sea level is about 1.38 kg. How much does it
ID: 1475977 • Letter: T
Question
The mass of 1 cubic meter of air at sea level is about 1.38 kg.How much does it weigh in Newtons?
How much would a stack of 7.47E+3 such cubes weight?
If this total weight were applied to an area of 1 m^2, how much pressure would it produce on that surface? (Answer in N/m^2)
NOTE: the answer should look familiar. (Although the atmosphere actually gets less dense with increasing altitude, the total amount of air is the same as if these sea-level cubes were stacked some 8 km high.) The mass of 1 cubic meter of air at sea level is about 1.38 kg.
How much does it weigh in Newtons?
How much would a stack of 7.47E+3 such cubes weight?
If this total weight were applied to an area of 1 m^2, how much pressure would it produce on that surface? (Answer in N/m^2)
NOTE: the answer should look familiar. (Although the atmosphere actually gets less dense with increasing altitude, the total amount of air is the same as if these sea-level cubes were stacked some 8 km high.)
How much does it weigh in Newtons?
How much would a stack of 7.47E+3 such cubes weight?
If this total weight were applied to an area of 1 m^2, how much pressure would it produce on that surface? (Answer in N/m^2)
NOTE: the answer should look familiar. (Although the atmosphere actually gets less dense with increasing altitude, the total amount of air is the same as if these sea-level cubes were stacked some 8 km high.)
Explanation / Answer
Expression for weight
W = mg = ( 1.38 kg ) ( 9.8 m/s2 ) = 13.5 N
---------------------------------------------------------------------------
Total mass of 7.47E+3 ice cubes : ( 7.47E+3) ( 1.38 kg ) = 10308.6 kg
Now find weight:
W = mg = ( 10308.6 kg )( 9.8 m/s2 ) = 1.01 x 105 N
---------------------------------------------------------------------------------------------------------
Pressure at the bottom is calculated by using the following formula
P = F /A = 1.01 x 105 N / m2
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.