Ehryk
Reputation
2,036
Top tag
Next privilege 2,500 Rep.
Create tag synonyms
 Apr 23 awarded Yearling Mar 16 awarded Popular Question Mar 16 awarded Popular Question Feb 2 comment Why is 7 TeV considered as a big amount of energy? I'll try to answer that with two assumptions: the 'average' collision rate is held constant for the entire season of "600 million collisions per second" (Source), and the energy released in every collision is ONLY the kinetic energy of stopping the particles. Thus, $600,000,000\ per\ second * 7\ TeV * 2 = 1345.83\ Joules\ per\ second = 1.35\ kW$, or $0.001\%$. This is, of course, absurd, as the 'purpose' of the LHC is more than just 'producing collisions', and the 120MW includes additional processing, cooling, etc. Jan 16 awarded Guru Jan 15 awarded Good Answer Jan 15 awarded Nice Answer Jan 15 revised Why is 7 TeV considered as a big amount of energy? Fixed typos, added airplane example for comparison Jan 15 answered Why is 7 TeV considered as a big amount of energy? Jan 10 awarded Notable Question Oct 6 awarded Good Question Oct 1 awarded Famous Question Jul 24 comment How does a planet's size really affect its surface gravity? Great ball park analysis! Good work. Jun 1 awarded Popular Question May 5 revised Hydrogen-boron fusion Used numbered list. May 5 suggested approved edit on Hydrogen-boron fusion Apr 29 comment Is there any disadvantage to sending rockets straight up? Right, but crossing into the Moon's SOI is roughly equivalent to what I meant by crossing the Earth - Moon L1. Apr 28 awarded Good Answer Apr 28 comment Is there any disadvantage to sending rockets straight up? Launch Site latitude is dependent on the orbit desired and chosen to minimize fuel. For a Polar orbit, the equator is the worst place to launch as you'll have to spend $500 m/s \Delta v$ extra fuel to cancel this effect, and the north or south poles would be ideal. For equatorial orbits the direction of Earth's rotation (including geostationary), indeed the equator is the ideal place to launch and has the minimum fuel requirements, but these 'ideal' locations have to be tempered against the practicality of getting a rocket and launch facility there. Apr 28 revised Is there any disadvantage to sending rockets straight up? Added links to KSP