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Home >All Categories > Science & Mathematics >Physics >Open Question cindy Member since:February 20, 2011Total points:7 (Level 1)Unpolarized light with an intensity of 275 W/m2 passes through two polarizers whose transmission axes are at an angle of 30.0? with respect to each other. What is the intensity of the light transmitted through both polarizers?Answer Question

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I've made this circuit pictured here: http://www.epanorama.net/circuits/tele2.gif

But when I test it, there is a very loud humming/buzzing noise and I can barely hear the audio I'm playing. Is there anyway to eliminate this noise, or a better circuit for this application?

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as far as I can tell your not multiplying exponents but rather.. distrubiting the "X" in front of the parentheses.

You multiply every number inside of the parentheses by -X.

-6x6^3 + 5x^2y^2 -X^2y + 5x^4

Goodness I hope I'm right.. it's been a while :P

There should be online calculators that will check my answer and also show you the steps though.
There's online calculators for everything these days.

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Home >All Categories > Science & Mathematics >Physics >Open Question Jim Member since:October 04, 2009Total points:369 (Level 2)I though about this while doing laps at the pool the other day. If temperature affects the viscosity of the water/fluid does it also affect the speed of an object through it because as the passage through a fluid becomes easier through lessening viscosity the means of propulsion should degrade at the same rate as it relies on newtons 2nd law to move forward. So for example for a swimmer in a pool would they swim identical times if they expended identical amounts of energy at different water temps or is there a variance.Answer Question

by Scampi Member since:January 23, 2011Total points:1,111 (Level 3)I saw a shallow diver on TV the other day, and he said he likes the water to be as close to freezing as possible because it makes the water slightly thicker. Not sure it is really noticable with Humans swimming through it as their speed varies each time anyway.

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