1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Angelina_Jolie [31]
4 years ago
9

A common radio wavelength observed coming from astronomical objects is 21 cm. What temperature is associated with this radiation

?
Chemistry
1 answer:
qaws [65]4 years ago
8 0

Answer:

The temperature associated with this radiation is 0.014K.

Explanation:

If we assume that the astronomical object behaves as a black body, the relation between its <em>wavelength</em> and <em>temperature</em> 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

You might be interested in
Five Biomedical Importance of Nucleotides
Brut [27]

Explanation:

BIOMEDICAL IMPORTANCE

In addition to serving as precursors of nucleic acids, purine and pyrimidine nucleotides participate in metabolic functions as diverse as energy metabolism, protein synthesis, regulation of enzyme activity, and signal transduction.

4 0
3 years ago
Heisenberg's uncertainty principle tells us that _____. heisenberg's uncertainty principle tells us that _____. the de broglie w
Alexandra [31]

Based on Heisenberg's uncertainty principle, the position and velocity of a particle cannot be determined simultaneously with accuracy.

In other words, Heisenberg's uncertainty principle states that the more accurately we know the position of a particle the less accurately we can know its velocity. Mathematically it is given as:

Δx.mΔv >= h/2π

where: Δx = uncertainty in position

m = mass

Δv = uncertainty in velocity

h = plancks constant

   


3 0
4 years ago
Read 2 more answers
Identify the limiting reactant when 9.65-g H2SO4<br> reacts with 6.10-g of NaOH.<br> I need help
12345 [234]
The equation is H2SO4 + 2NaOH = 2H2O + Na2SO4, Also, what is the theoretical yield of Na2SO4 in grams?
8 0
3 years ago
How many joules are required to heat 2 l of water in a pot from 20 ◦c to the boiling point of water? the specific heat of water
miss Akunina [59]
  The  joules  required  to   heat 2L  of  water  in  a  pot  from  20  c  to  the  boiling  point  of  water  is  calculated     using the following  formula

  Q=    MC  delta  T
M  = mass  =   density  x   volume(  2  x 1000= 2000ml)
M  =     1g/ml  x2000  ml  =  2000g
C  =  specific  heat   capacity =  4.18  g/c
delta  T  =  change  in  temperature  =  100 c (  boiling  point  of  water)   -  20 c =  80 c 
Q  is therefore  =   2000 g x 4.18 j/g c  x  80c  =  668800j
 


4 0
3 years ago
How much heat is required to change 100.0g of ice at 0C into water at 0C?
Oduvanchick [21]

Answer:

5 degrees required for ice

5 0
3 years ago
Other questions:
  • What is the de Broglie wavelength (in meters) of a 45-g golf ball traveling at 72 m/s?
    12·2 answers
  • an atom contains 32 protons and has a mass number of approximately 72 amu what is the chemical symbol for the atom
    15·2 answers
  • What is the most striking part of this simulation?
    13·1 answer
  • PLEASE HELP! 15 POINTS!!!!!
    14·1 answer
  • Ice being broken into small bits is an example of a ________ change
    9·2 answers
  • A sample of C3H8 has 6.72 x 10^24 H atoms. <br> What is the total mass of the sample?
    9·1 answer
  • Describe the composition of a molecular compound. What are two major characteristics of molecular compounds?
    7·1 answer
  • A generic weak acid with formula HA has a Ka = 2.76 x 10-8. Calculate the Kb for the conjugate base of the acid.
    10·1 answer
  • Why is cell division a<br> necessary function of living things?
    14·1 answer
  • If 8.50 g of phosphorus reacts with hydrogen gas at 2.00 atm in a 10.0-L container at 298 K, calculate the moles of PH3 produced
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!