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| Deceleration's 100 math problems thread!; Absolute torture... | |
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| Tweet Topic Started: Aug 4 2011, 04:22 AM (5,614 Views) | |
| Spar | Mar 12 2012, 02:25 PM Post #141 |
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Wandering Scavenger
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I'm curious if Camo can answer this. I'm sick of being the guy with all the answers. |
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| Camo5 | Mar 12 2012, 04:20 PM Post #142 |
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Resident BorgCube
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Parsing notes together....V=IR, P=IV, Vt= V1 + V2 = I (R1 +R2) V1 = Vtotal (R1 / R1+R2) .5A 60w, .833A 100w, resistance in 100w bulb = 144 ohms, 60w bulb = 240 ohms... 384 ohms... 120*(144/384)= V1 = 45v Thinking... Most of my notes deal with a resistor and a motor, not lights...Not quite sure how to calculate their resistance, hmm.. If you mean difference in ohms, that's 96 more ohms from the 60-watt, meaning it gets hotter? Edited by Camo5, Mar 12 2012, 04:33 PM.
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| Deceleration | Mar 12 2012, 09:04 PM Post #143 |
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Coreling Conquerer
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What? What's your answer? This is just gibberish. Find the power output of each bulb. |
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| Camo5 | Mar 12 2012, 10:13 PM Post #144 |
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Resident BorgCube
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I'm afraid I don't understand the question. is there a specific unit you want me to look for? |
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| Deceleration | Mar 12 2012, 10:32 PM Post #145 |
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Coreling Conquerer
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Okay. Find the amount of energy dissipated by each lightbulb in a reasonable amount of time, such as 1 second. Also known as the power output. Don't just copy down the power ratings of the bulbs, they're for parallel circuits, but you need to use them to find the resistance. Any more help and this question will be pointless. |
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| Camo5 | Mar 12 2012, 11:06 PM Post #146 |
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Resident BorgCube
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hmph. 100w = 45v, 60w = 75v. 45*.3125A = 14.0625 watts for the 100w, 75*.3125 = 23.4375w for the 60w. That's my answer. Dafuq? |
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| Deceleration | Mar 13 2012, 12:13 AM Post #147 |
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Coreling Conquerer
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You're right! The 100 watt bulb actually gives out less power in a series circuit. Also, the bulbs give out very little power in total, so series circuits are not used. The resistance adds up, resulting in only a little current and a little power. |
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| Camo5 | Mar 13 2012, 12:37 AM Post #148 |
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Resident BorgCube
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Huh. They seemed too low to be right, so I had initially avoided that answer. |
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| Brayzure | Mar 22 2012, 01:31 PM Post #149 |
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The Analytic Commander
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Any chance of new questions? |
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| Deceleration | Mar 22 2012, 09:02 PM Post #150 |
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Coreling Conquerer
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A low chance, like the chance that you will survive in Pinpricks in Space. But a chance nonetheless. |
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