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What is the difference between a hot black body and a cool black body?
A. The hot black body radiates less intensely at shorter wavelengths but more intensely at longer wavelengths.
B. The hot black body has a larger mass.
C. The hot black body radiates more intensely at all wavelengths.
D. The hot black body has a larger radius
E. The hot black body radiates more intensely at shorter wavelengths but less intensely at longer wavelengths.
I guess E but I think I’m wrong. Which one is the correct answer?
I agree with C. Here’s why. Let’s say the cold black body is only warm enough to make infrared. Let’s say it’s glowing with 100 watts of infrared. Now, let’s say you heat it up. One, it will glow visible light (shorter wavelenghts). Two, in infrared it will be even brighter (like 200 watts).
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Health o Meter SAB602-05 Dial Scale, Black with Silver Accent $9.95 Health o Meter SAB602DQ05 Dial Scale, Black with Silver Accent has large platform. Also has chrome bezel and pointer. It is very accurate. Accurately measures weight up to 330lbs…. |
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Bodum Shin Bistro 5-Ounce Milk Frother $23.50 10492-16US Features: -Milk frother. -Shin Bistro collection. -Creates a smooth and consistent milk foam without electricity. -Microwave safe glass beaker. -Dishwasher safe. -Capacity: 5 oz. -Overall dimensions: 8.7” H x 3.3” W x 3.2” D…. |
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60 Grandrich® Full Spectrum Floor Lamp $76.00 60″ Grandrich Full Spectrum Floor Lamp. Produces bright, easy – on – the – eyes illumination similar to natural light! No strain, your gain! Working, reading or whatever, the Grandrich Full Spectrum Floor Lamp is a sight for sore eyes! Its included 27-watt full-spectrum bulb mimics the stuff produced by Mother Nature for bright light that saves you the headaches. Efficient, too! In fact, at 27 wat… |
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Invasion of the Body Snatchers (1956) [VHS] $3.96 Something’s wrong in the town of Santa Mira, California. At first, Dr. Miles Bennell (Kevin McCarthy) is unconcerned when the townsfolk accuse their loved ones of acting like emotionless imposters. But soon the evidence is overwhelming–Santa Mira has been invaded by alien “pods” that are capable of replicating humans and taking possession of their identities. It’s up to McCarthy to spread the wor… |
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Arsenic And Old Lace $11.64 The original CBS / Fox 1st edition uncut video release. (From the box): Sweet old Aunt Abby and Aunt Martha have an unusual recipie for entertaining their gentleman callers: it includes a generous helping of arsenic. As their nephew (Cary Grant) discovers, that’s only one of their odd features of their cozy Brooklyn home. Macabre and hilarious, ARSENIC & OLD LACE is director Frank Capra’s brillian… |
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Body & Soul (Aniv) [VHS] $5.48 … |
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Invasion of the Body Snatchers $6.88 Something’s wrong in the town of Santa Mira, California. At first, Dr. Miles Bennell (Kevin McCarthy) is unconcerned when the townsfolk accuse their loved ones of acting like emotionless imposters. But soon the evidence is overwhelming–Santa Mira has been invaded by alien “pods” that are capable of replicating humans and taking possession of their identities. It’s up to McCarthy to spread the wor… |
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The Crawling Eye (Widescreen European Edition) $2.66 Studio: Image Entertainment Release Date: 10/03/2006 Run time: 84 minutes Rating: Nr… |
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Inova BB-W Microlight with Black Body and White LED $5.70 For a tiny-but-bright light anytime, anywhere, try the Microlight from Inova. Get micro size and macro performance, with true power, compactness, flexibility, and a spotlight bright white LED beam. This is the only LED flashlight to bring INOVA engineering, technology and performance to its size class. Unlike other lights, the Microlight projects a highly focused light beam up to 50 feet with up… |
