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weqwewe [10]
2 years ago
12

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

Physics
1 answer:
mihalych1998 [28]2 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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3 years ago
Which simple machines make up a wheel barrow
7nadin3 [17]

Answer:

a lever and a wheel and axle (i guess)

Explanation:

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If one stand of DNA reads as AATTCCGGATCG, what would the opposite strand bases be?
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3 years ago
The half-life of iodine-131 is 8.04 days. It’s decay constant equals
Svetllana [295]

Answer:

Explanation:

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T=0.693/λ

where λ is decay constant in order to find decay constant

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7 0
2 years ago
How much power is needed to lift a 20-kg object to a height of 4.0 m in 2.5 seconds?
4vir4ik [10]

Answer:

313.92w

Explanation:

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P=W/∆t = Fv

Givens:

m=20kg

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a=9.81m/s²

In order to find power, we first need to solve for work.

W=Fd (force*displacement), f=mg

W=mg∆y

W=(20kg)(9.81m/s²)(4.0m)

W=784.8J

P=W/∆t

P=784.8J/2.5s

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2 years ago
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