If we assume that the astronomical object behaves as a black body, the relation between its wavelength and temperature is given by Wien's displacement law.

$\lambda_{max}=\frac{b}{T}$

where,

λmax is the wavelength at the peak of emission

b is Wien's displacement constant (2.89×10⁻³ m⋅K)

T is the absolute temperature

For a wavelength of 21 cm,

$T=\frac{b}{\lambda _{max} } = \frac{2.89 \times 10^{-3} m.K }{0.21m} =0.014K$

8 0

3 years ago

In a pendulum, a continuous change occurs between kinetic energy and

Masja [62]

It should be potential energy!!!

7 0

3 years ago

Water glass is found in

klemol [59]

Answer:

liquid form

Explanation:

am i right? if right like

5 0

3 years ago

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Pls help! Is volume equal to mass over density?

olganol [36]

density = mass/volume

volume= mass/density

Yes, you're correct.

5 0

2 years ago

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