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How many photons per second shine on the book from a 75W bulb?
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Unknown
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1
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8884
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June 27, 2011, 05:08:43 AM
by oldprof
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Solve this word problem?
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DanP
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2
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396
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June 27, 2011, 04:41:43 AM
by Ollie_Chick
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Incandescent lightbulbs are filled with an inert gas to lengthen the filament life?
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chipedwards89
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0
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276
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June 27, 2011, 01:33:20 AM
by chipedwards89
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Why are bees attracted to my halogen floor lamp?
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_
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1
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2341
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May 29, 2011, 12:17:11 AM
by Court
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easy math word problem please help?
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hello
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2
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340
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May 29, 2011, 12:02:59 AM
by The_Man
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What are the different kinds of lights?
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Ken_Miller
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1
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312
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May 28, 2011, 09:39:02 PM
by wolfling
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Electricity used if light bulb is not in socket?
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Dan
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6
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395
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May 28, 2011, 08:48:44 PM
by como
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What are some differences and similarities between incandescent and fluorescent light?
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I_never_finish_any
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2
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297
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May 28, 2011, 08:22:03 PM
by PQR_Theorist
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Do you know of any site that displays the price of the following type of bulbs?
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mxv588t
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2
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273
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May 28, 2011, 05:33:08 PM
by Bert_K
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Looking for a graph or info on CFL energy use when the switch is first turned on?
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domomonkey2000
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1
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320
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May 28, 2011, 04:18:18 PM
by VShade
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physics homework helppp pleasee?
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i_need_answers
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2
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294
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May 28, 2011, 12:21:04 PM
by Faris_A
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How many photons are emitted?
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A
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2
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290
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May 28, 2011, 10:30:43 AM
by Alone_GuY
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What is the change in the intensity of red light given off by an incandescent body if the temperature increase?
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Someone_Else
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1
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273
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May 28, 2011, 08:34:15 AM
by KFerreira
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Physics hw help please!?
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i_need_answers
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0
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276
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May 28, 2011, 07:30:54 AM
by i_need_answers
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the common exit sign in a public building uses two 20W incandescent bulbs. These could be?
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abnrml
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1
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278
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May 28, 2011, 05:17:11 AM
by za
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8 grade science Please help!!!!!!!!!!!?
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Black_Princess
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1
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279
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May 28, 2011, 04:02:38 AM
by king_of_kings
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How much electricity will an ultra efficient light bulb use?
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epichero22
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1
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303
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May 28, 2011, 03:44:25 AM
by Ray_mond
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Do incandescent light bulbs really burn brightest just before they burn out? Why?
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James_M
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2
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496
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May 23, 2011, 01:39:25 PM
by MidAtlantian2
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Are energy saving light bulbs energy saving.?
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mpt_matthew
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7
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1277
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May 23, 2011, 12:58:13 PM
by Tate_Garrett
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what light producing devices operate at a higher temperature, incandescent or electric bulb?
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Seri_Bruhm
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2
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856
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May 08, 2011, 07:13:30 PM
by mdbest
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Topic you have posted in
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