Answer:
the peak wavelength when the temperature is 3200 K =
Explanation:
Given that:
the temperature = 3200 K
By applying Wien's displacement law ,we have
T = 0.2898×10⁻² m.K
The peak wavelength of the emitted radiation at this temperature is given by
=
=
Hence, the peak wavelength when the temperature is 3200 K =
The assumption that the cosmic microwave background
is the remnant of the environment at the time of the big bang
or very shortly after it explains very well what we observe now.
So it is the current prevailing theory. "Believe" is not involved.
Human eye could perceive this visible light and used it to look at the objects.
<u>Explanation:
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There are 3 forms of radiation emitted by the sun. They are Infrared radiation, Ultra Violet radiation as well as visible radiation.
Visible light is the type of light can perceive by the human eye and utilizes to see the objects.
Since the sun is hotter (5800 K) than the earth, it emits mostly the radiation energy in the form of this visible light.
Answer:
595.73 X 10⁻⁶ V.
Explanation:
The magnetic field is towards the north with dip angle equal to 65 so the horizontal component of earth's magnetic field will be
H = 50 X 10⁻⁶ Cos 65 = 21.13 x 10⁻⁶ T.
length of rod L = 1.45 M
Velocity of rod = 70 km / h = 19.444 m /s
Since the top of the antenna rod is to have positive polarity , current induced in it will be from down to up . Magnetic field is towards the north .
To cut magnetic flux perpendicularly , rod should move towards the east .
We can easily get this direction by applying Fleming's right hand Rule.
Induced emf = H L v
= 21.13 x 10⁻⁶ X 1.45 X 19.444
= 595.73 X 10⁻⁶ V.
Explanation:
some objects that are conduct :Metals conduct electricity, so if there is just the symbol of a metal, eg Mg(s), then it will conduct, even in the solid or liquid state. 2. Ionic compounds conduct when they are dissolved in water, or are melted.
what can it do ?:
A conductor is a material which electricity, heat or sound can flow through. An electrical conductor conducts electricity. ... This means that they make it very hard for electricity to flow through them. A material that stops electric current is called an insulator (electricity).
hope this helped! if not I'll answer again