Homework Help: help help 9 physics) i need an aswer fast!

Posted by H.T on Thursday, April 28, 2011 at 7:52am.

a 0.5 m^2 solar collector radiation from the sun and focuses it on 250g of water that is inially at 23 degrees . the average intensity of radiation arriving from the sun at this location is 550 Wm^-2. if you assume that this is collected with 100% efficiency. how much time is required for the collector to raise this temperatuer to boiling, at 100 degrees

help help 9 physics) i need an aswer fast! - bobpursley, Thursday, April 28, 2011 at 8:56am
Are you taking a test?
help help 9 physics) i need an aswer fast! - H.T, Thursday, April 28, 2011 at 9:01am
lol, no me and my friends how homework and we all ( 5 of us) dont get this question. !!
help help 9 physics) i need an aswer fast! - bobpursley, Thursday, April 28, 2011 at 9:05am
figure the heat from the sun:

intensity*area*time

set that equal to masswater*specificheatwater*changeinTemp.

Five friends? This is a an easy question, get new smarter friends.
help help 9 physics) i need an aswer fast! - H.T, Thursday, April 28, 2011 at 9:09am
haha, your just too smart =)
thanx

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