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inysia [295]
3 years ago
15

Charcoal appears black in color because it

Physics
2 answers:
steposvetlana [31]3 years ago
4 0
C. This is the idea of "black body radiation". Charcoal/carbon is a "perfect black body". Absorbs all radiation. There's a whole host of stuff about this in physics, including, I think, Planck's (Nobel Prize winner) black body radiation theory.
Natalka [10]3 years ago
3 0
I think the answer is C but correct me if im wrong hope this helps :)
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What are the three longest wavelengths for standing waves on a 264- cm -long string that is fixed at both ends
miv72 [106K]

The three longest wavelengths for the standing waves on a 264-cm long string that is fixed at both ends are:

  1. 5.2 meters.
  2. 2.6 meters.
  3. 1.7meters.

Given data:

Length of the fixed string = 264cms = 2.64 meters

The wavelength for standing waves is given by:

λ = 2L/n

where,

  • λ is the wavelength
  • L is the length of the string

For n = 1,

  • λ = 2×2.6/1

= 5.2 meters

For n = 2,

  • λ = 2×2.6/2

= 2.6 meters

For n = 3,

  • λ = 2×2.6/3

= 1.7 meters

To learn more about standing waves: brainly.com/question/14151246

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2 years ago
How are density and pressure related related to each other?
lawyer [7]

Answer:

The pressure is the measure of force acting on a unit area. Density is the measure of how closely any given entity is packed, or it is the ratio of the mass of the entity to its volume. The relation between pressure and density is direct. Change in pressure will be reflected in a change in density

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3 years ago
Which star has the highest surface temperature?
lesya [120]

Answer:

white star

Explanation:

because it is the hottest form of a star

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Which unit do astronomers use for angular measurement?
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C and D are units of length or distance.
A is a measured angle.
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What is ozone? How and where is it formed in the atmosphere?
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