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Anonymous Tue Mar 22 23:47:59 2011 No.2756678 [Reply] [Original]

Hey i got a question for you /sci/ i got this question for physics and I just can't figure it out. this is for a hand in assignment so i can't just check an answer book.. anyway here it is:

An illumination of 300lx is recommended for reading good printed material.If a desk lamp makes a circle with a diameter of 40 cm when the bulb is 50cm above the surface, what is the luminous flux of of the bulb?

Any help would be greatly appreciated

>>	Anonymous Tue Mar 22 23:50:59 2011 No.2756697 self bump

>>	Anonymous Tue Mar 22 23:55:59 2011 No.2756729 find equation apply equations

>>	Anonymous Tue Mar 22 23:58:59 2011 No.2756745 >>2756729 I understand that of course i attempted an equation. But i don't know what the significance of the distance from the desk is. Like if i think about it practically it makes total sense but I don't know how to apply this to an equation

>>	Anonymous Wed Mar 23 00:06:59 2011 No.2756775 OP here expecting more from /sci/

>>	Anonymous Wed Mar 23 00:08:59 2011 No.2756779 File: 111 KB, 360x271, 1276479027694.jpg [View same] [iqdb] [saucenao] [google] >>2756678 troll harder nig

>>	Anonymous Wed Mar 23 00:10:59 2011 No.2756787 File: 44 KB, 500x415, 1300080024585.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Wed Mar 23 00:11:59 2011 No.2756791 >>2756678 The formula for incident flux is dependent on distance from the source...... I do not know it off hand and i do not want to go look up my astrophysics notes right now

>>	Anonymous Wed Mar 23 00:12:59 2011 No.2756794 File: 487 KB, 713x763, 1299718141813.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Wed Mar 23 00:15:59 2011 No.2756812 File: 47 KB, 550x546, 1298851050637.jpg [View same] [iqdb] [saucenao] [google] >>2756775 >>2756678

>>	Anonymous Wed Mar 23 00:16:59 2011 No.2756819 File: 266 KB, 430x539, 1282805086435.png [View same] [iqdb] [saucenao] [google] >>2756678 >>2756775 op is a fag

>>	Anonymous Wed Mar 23 00:17:59 2011 No.2756823 >>2756791 offering virtual head for that equation also will dump a brazzers pass if someone figures this out

>>	Anonymous Wed Mar 23 00:18:59 2011 No.2756826 File: 237 KB, 750x1080, 1298755967172.jpg [View same] [iqdb] [saucenao] [google] >>2756775 >>2756678 troll physics is all u need

>>	Anonymous Wed Mar 23 00:20:59 2011 No.2756832 File: 669 KB, 1200x1600, 1292981153191.jpg [View same] [iqdb] [saucenao] [google] >>2756823 op also has naughty america, reality kings and bangbros

>>	Anonymous Wed Mar 23 00:23:59 2011 No.2756849 File: 13 KB, 500x243, 1292379521768.jpg [View same] [iqdb] [saucenao] [google] >>2756678

>>	Anonymous Wed Mar 23 00:24:59 2011 No.2756852 File: 133 KB, 400x307, 1282802387731.png [View same] [iqdb] [saucenao] [google]

>>	Anonymous Wed Mar 23 00:25:59 2011 No.2756854 File: 82 KB, 341x318, 1284845406426.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Wed Mar 23 00:26:59 2011 No.2756860 File: 8 KB, 189x251, 1296703034643.jpg [View same] [iqdb] [saucenao] [google]

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