Sun 16 Dec, 2012 05:56 pm - Newton's laws exist to describe physical reality. You made up an unphysical scenario and observed that Newton's laws don't describe it. How does that refute Newton's laws?... (view)
Sun 16 Dec, 2012 05:31 pm - "In religion you have certainty without proof.
In science you have proof without certainty."
I like that, I'm gonna use it but I would also say that:
' in science you... (view)
Sun 16 Dec, 2012 10:54 am - Regarding Prof Brian Cox --
On his program 'what's wrong with gravity' he said, after explaining what's wrong with Newtonian gravitational theory, that gravitational theory... (view)
Wed 12 Dec, 2012 04:49 pm - "This calculation will only get you the small proportion of work done (and energy used) to deform the soles."
Yes that's the idea, we're just considering the effects of... (view)
Tue 11 Dec, 2012 12:18 pm - Thanks
Thought it was right but I was cautious because it seemed to easy too solve the problem I was thinking of, which was calculating the energy used when footwear sole is compressed by body... (view)
Mon 10 Dec, 2012 04:26 pm - Can I say (and be correct):
Work done = energy used (work - energy theorem)
Power = Work done/time or P = f*d/t
and so
Work done/time = energy used/time and = Power
Therefore... (view)
