Solving Physics Puzzles in Space: A 500cm^3 Challenge

AI Thread Summary
The discussion focuses on calculating the annual air consumption of four astronauts in a spherical space station, with each astronaut breathing approximately 500 cm³ of air per breath. Participants are prompted to convert the air volume from cubic centimeters to cubic meters and to consider the frequency of breaths per minute to determine total yearly consumption. Additionally, the diameter of the space station must be calculated to accommodate this volume of air. The conversation emphasizes basic arithmetic and unit conversion as key steps in solving the problem. Overall, the thread seeks to clarify the physics involved in these calculations.
jcz2
Messages
2
Reaction score
0
PHYSICS...please help!

Four astronauts are in a spherical space station.

1) If, as is typical, each of them breathes about 500cm^3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year?

2) What would the diameter (in meters) of the space station have to be to contain all this air?
 
Physics news on Phys.org


jcz2 said:
Four astronauts are in a spherical space station.

1) If, as is typical, each of them breathes about 500cm^3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year?

2) What would the diameter (in meters) of the space station have to be to contain all this air?

Post moved to Homework Help, where it belongs.

What is your try at the solution, jcz?
 


convert the cm^3 into m^3.
How many puffs do you take per minute? How many per year? The rest is simple arithmatic...
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Physics puzzle about the concentration of fog droplets in the air
Replies
26
Views
2K
Gas Laws -- An astronaut breathing presurized air
Replies
44
Views
4K
Ideal Gas Law Homework: Calculating Number Density and Spacing Between Molecules
Replies
2
Views
1K
How fast should a space station rotate to simulate Earth's gravity?
Replies
11
Views
8K
How much oxygen absorbing area does an insect have?
Replies
7
Views
5K
Solving a Puzzling Physics Problem: ##15 \pm 3\sqrt{15}##
Replies
17
Views
2K
Cell and membrane volume physics
Replies
1
Views
2K
I How to convert density ratio of grams/ mm^3 into metric tonnes/ m^3
Replies
6
Views
2K
Force Field Experiments: Realistic Physics Questions
Replies
8
Views
3K
Writing: Input Wanted Civilians in Space vs. Professionalism and Military Decorum
Replies
7
Views
3K

Hot Threads

Recent Insights

Back
Top