Answer:
B) the blue one
Explanation:
We can assimilate each metal bar to a black body. The peak wavelength of the radiation emitted by a blackbody is given by Wien's displacement law:
[tex]\lambda = \frac{b}{T}[/tex] (1)
where
b is the Wien's displacement constant
T is the absolute temperature of the object
In this case, we have one object hotter and the other one colder. We see from (1) that the peak wavelength is inversely proportional to the temperature: therefore, the hotter object will have shorter peak wavelength, while the colder object will have longer peak wavelength.
Since red light has longer wavelength than blue light, we can conclude that the object that glows blue is hotter than the one that glows red.
Answer:
When a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. What needs to be done to meet this increased demand?
✔ raising the control rods
When the heat wave passes and temperatures become mild, electrical demand decreases. What needs to be done to reduce electricity output in response to this decreased demand?
✔ lowering the control rods
Left: An enclosed square has 4 orange bars, with green bars between them. Right: the green bars have been partially removed from between the orange bars, which are now glowing red and yellow.
Explanation:
Those are the correct answers for both of the two part questions. I just did them on Edge. Hope my answers helps you!!!
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