some nerd

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Solar energy absorbed by earth per unit of time

In one of the reseacrh paper I read, it reports average albedo to be ~30% with maximum change of 2%. At low altitude, it reports absorbed maximum solar energy to be 300 W/m2. If you wish, you can read more on pp 380-384 of this article.

Sen z,Progress in energy and combustion science,30(2004),367-416.

Effect of heat and orders in rate equations

rate of reaction zero means independent of concentration. In that case, rate of reaction is proportional to rate constant which depends upon temperature.

thermal physics

I think, to be more accurate, you have to equate heat loss thru conduction and radiation to calculate the outside glass temperature.

That means, k(T1-T2)/l = sigma*emissivity*area*power((T2- T3),4)

you know T1, T3 and all other variable. So calculate T2. Then use q/t= K(T1-T2)/l to calculate heat loss.

How hot is a 40watt lightbulb?

It will be pretty hot if it is incandescent (I cant give number though) but if it Fluroescent bulb then may be just room temp..

What does bush plan to do about energy crisis?

Our best bet is from natural gas and oil' date=' which accounts for more than seventy percent of bulk hydrogen production.

Rev Prez[/quote']

We dont have much oil and gas that is the problem at the first place. Only thing we, US or world, have in plenty is coal so that can be used to get the hydrogen. But if you do that, anyway you are causing same environmental problems. So in a near term it is a possible solution becasue we dont have gas/oil so we will convert coal into hydrogen. However if you look into long run when coal is not there, then we have to have new source of energy be it solar or nuclear...

Assistance requested: Alien survey

I am assuming since they contacted us, they are more technologically advanced. So my questions will be

What do they do to get the energy

Do they feel emotions

What is the composition of their atmosphere

How big is their universe?

What are the rules they follow to control the society

How are they reproduced

How old their species are

Can they see into future

Who is their creator or do they know how they were formed

what can they do for us

Rumor

Well I think that to be politician, you have to be very cunning and rhetoric in speech. And good guys always speak from their heart so they dont end up as politician or unable to survive in political environments.

Which category of science is the best?

I agree with YT on that. I think everything has an overlap. But still I personally rate physics at higher level.

What does bush plan to do about energy crisis?

I guess Bush is doing what his advisory board suggests him to do. We talk about all the renewable energy source, but they are associated with either non-continous supply of energy like, Wind, Solar OR some environmental problems. I guess the only way to resolve energy crisis will be to go for nuclear fission and keep on investing in nuclear fusion. Investing in hydrogen energy is not a solution, though. I think for the time being, we will convert coal into oil or gas to take care of the rising problem.

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