Part A
What is the approximate mass of air in a living
room 5.5m×3.9m×2.7m5.5m×3.9m×2.7m? The density of air
is 1.29 kg/m3kg/m3.
Express your answer to two significant figures and include the
appropriate units.
m =
Part B
Estimate volume of a person of mass 52 kg. [Hint:
Because a human can swim on or just under the surface of the water
in a swimming pool, you have a pretty good idea of human's
density.]
Express your answer to two significant figures and include the
appropriate units.
V =
Part C
Your foot has been stepped on, twice! Both times, a
100 kg person put all their weight on the heel of their
shoe upon your foot. The first person was wearing flats, and their
heel had an area of 60 cm2. The second person was wearing high
heels, and their heel had an area of 9 cm2. What can you say
about the two pressures on your foot?
A. The dress shoe exerts more pressure on your foot than
the high heel.
B. The high heel exerts more pressure on your foot that the
dress shoe.
C.The two exert the same amount of pressure when they step on
your foot.
D. There is not enough information to compare the two
pressures.
Part D (Subparts 1-2)
A person wearing the shoes has a mass of 56 kg
- Question 10 1 Part A What Is The Approximate Mass Of Air In A Living Room 5 5m 3 9m 2 7m5 5m 3 9m 2 7m The Density Of A 1 (9.85 KiB) Viewed 34 times
Estimate the pressure exerted on a floor by one pointed heel of
area 0.45 cm2.
Express your answer to two significant figures and include the
appropriate units.
P =
Subpart 2
Estimate the pressure exerted on a floor by one wide heel of
area 16 cm2.
Express your answer to two significant figures and include the
appropriate units.
P =