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1. ### Problem with 'O' Ring Tolerance?

In Parker 'O' ring handbook, Dichomatik 'O' ring handbook & Eriks 'O' ring handbook Stretch limit given as 5% maximum. However, I tried to contact so many industries from last 3 weeks & finally I find one which gives me desirable tolerance which I required. So, my problem is solved...
2. ### Problem with 'O' Ring Tolerance?

It may seems like simple homework question but it is industrial question with actual condition & I am struggling for the answer & also asked this question on other website but not get any reply. So ,please help me 'O' ring Internal Diameter(ID) ID=4 mm with tolerance is + & - 0.15mm...
3. ### How small can you go

Plank length puts limit on the smallest dimension which is 1.616×10^-35 Meter. Nothing can be smaller than this. Plank length is 10^20 times smaller than proton diameter. http://en.wikipedia.org/wiki/Planck_length
4. ### Is it possible to calculate earth's massiveness

if we were so far away from sun that the average Earth temperature drops & as it attain 90 K, oxygen start to liquefy, as 90 K is boiling temp. of oxygen at atm. Pressure. To calculate distance so many assumptions are required. Take only sun as a source of energy for earth, no other source...
5. ### Is it possible to calculate earth's massiveness

To convert oxygen into water at atmospheric temperature 300 K, pressure required is 5 GPa or 5000 MPa. See link http://en.citizendium.org/images/thu...se_diagram.png [Broken] Atmospheric pressure is 0.1 MPa. So, 50,000 times more pressure is required to convert oxygen into liquid. So it is...
6. ### Is it possible to calculate earth's massiveness

To convert oxygen into water at atmospheric temperature 300 K, pressure required is 5 GPa or 5000 MPa. See link http://en.citizendium.org/images/thumb/b/bc/Oxygen_phase_diagram.png/250px-Oxygen_phase_diagram.png Atmospheric pressure is 0.1 MPa. So, 50,000 times more pressure is required to...
7. ### Energy conservation in Acid

OK, it required force to pull apart & this additional energy which I give plate to pull apart is giving higher increase in temperature then theoretical calculation in which I only take electrical energy for calculation of rise in temp. thank you.
8. ### Energy conservation in Acid

Hello, Borek, Dalespam. Thank you for giving reply.

10. ### Energy conservation in Acid

Case:1 I have one iron spring. I compress it gives potential energy E= ½* K*x2 & bind it by glass wire which is not melted in acid. Now I put this spring in acid & it melted completely, So where the potential energy gone? Case:2 I put one magnet in glass vessel & hold it in vessel by some...
11. ### Energy Conservation & E=M*C2

This means that boiling water possesses higher mass then cold water by extremely small amount which is neglected for practical purpose. OK, Thanks for giving answer.
12. ### Energy Conservation & E=M*C2

This is question about equation E=m*c2. Why this equation does not required any condition of matter? Case 1: I take two mole (4 Kg)H2 & one mole(32 Kg)O2 & make water & get energy. 2H2 (4 Kg Hydrogen)+O2 (32 Kg Oxygen)=2H2O(36 Kg of water)+ 572 KJ Energy Now I convert this water into energy...
13. ### Energy lost in magnetism

Yes, the same thing which I want to tell you.
14. ### Energy lost in magnetism

Hello pallidin, If two magnet put in such a manner there is repulsion is acted between them, then lines of magnetic force of both magnet is in opposite direction, this leads lost in magnetism. That's why magnetism became weaker. I have heard this thing before if anything is wrong in this...
15. ### Energy lost in magnetism

Two magnet I put nearer to each other in such a way that there is a repulsive force between them. Both the magnets have some potential energy with respect to each other. I keep magnet in this position for a long time & so magnetic field became weaker & so magnet have less amount of potential...
16. ### Conservation of angular momentum with energy

OK, Very much Thanks for clearing my doubt.
17. ### Conservation of angular momentum with energy

Ice sketar rotates with open arms & her moment of inertia is I, rotational speed W. So, angular momentum is I*W. Energy is (1/2)I*W*W she folds her arms & her moment of inertia decreases to I/2. From conservation of angular momentum rotational speed became double say W*2. Energy became...
18. ### Relation of gravity with centrifugal force & gyroscopic effect?

Is there any relation of gravity with centrifugal force & gyroscopic effect? Rotating body shows centrifugal force due to radial acceleration α=rω2. This causes force just like gravitation force. Rotating gyroscope doesn’t fall & maintain motion. This is just like anti-Gravity. Can I say that...
19. ### Why Temperature increases by increasing pressure?

Temperature of gas is due to kinetic energy of molecule & pressure is due to molecule collide to container wall with some kinetic energy. If I decrease volume of container it increase pressure & Temperature. For pressure it is clear that more no. of molecule is struck to container wall due to...