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weqwewe [10]
3 years ago
12

What are the characteristics of a blackbody radiator? Give an example.

Physics
1 answer:
mihalych1998 [28]3 years ago
3 0

Answer:

A blackbody, or Planckian radiator, is a cavity within a heated material from which heat cannot escape. No matter what the material, the walls of the cavity exhibit a characteristic spectral emission, which is a function of its temperature.

Example:

Emission from a blackbody is temperature dependent and at high temperature, a blackbody will emit a spectrum of photon energies that span the visible range, and therefore it will appear white. The Sun is an example of a high-temperature blackbody.

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A microwave oven produces waves with wavelengths that are _______.
Firlakuza [10]

Answer:

longer than visible light

Explanation:

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A researcher is interested in exploring the effects of exposure to ultraviolet light on people’s emotional state. He divides his
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Explanation:

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3 years ago
11) Arthur and Betty start walking toward each other when they are 100 m apart. Arthur has a speed of 3.0 m/s and Betty has a sp
sleet_krkn [62]

Answer:

100 m

Explanation:

Arthur and Betty should be walking the same amount of time if they start walking at the same time and stop when they meet = t

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3t+2t=100\\\Rightarrow 5t=100\\\Rightarrow t=\frac{100}{5}\\\Rightarrow t=20\ s

The speed of dog is 5 m/s

Spot is running back and forth at 5 m/s for 20 seconds

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4 years ago
In an attempt to reduce our dependence on non–renewable resources, and cut down on the harm to the environment, we could burn __
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In an attempt to reduce our dependence on non-renewable resources, and cut down on the harm to the environment, we could burn biomass to produce electricity.

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7. True or False : All the energy in the universe that exists right now is all there
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True is the correct answer hope this helps
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3 years ago
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