This phenomenon is due to how the different wavelengths of light are scattered by the molecules of the atmosphere. On a clear day, the sky is bright blue because the short-wavelength components of the visible spectrum (violet and blue) are scattered more, and therefore they arrive at our eyes from all directions. (But our eyes do not perceive violet very well, therefore the sky appears just blue). When the sun sets, however, the path covered by the sunlight to reach our eyes becomes longer, and then blue light is scattered away and longer wavelengths (orange-red) start to reach our eyes and this is why the sky turns into this colors. Finally, at night the sky appears black because there is no sunlight (and black is absence of colors).
Answer:
the answer is 375°F
Explanation:
you simply subtract 250°F from 625°F
Answer:
Sodium ions
Explanation:
Please click crown below my answer.
Answer:
2.7 mV
Explanation:
A = 3.6 x 10^-3 m^2
B1 = 0.20 T, B2 = 1.4 T, t = 1.6 s
According to the Faraday's law of electromagnetic induction
e = - rate of change of magnetic flux
e = - dФ / dt
where, negative sign shows the direction of induced emf.
Ф = B x A
dФ / dt = A x dB / dt
e = A x dB / dt = 3.6 x 10^-3 x (1.4 - 0.2) / 1.6
e = 2.7 x 10^-3 V = 2.7 mV
Answer:
b, an element
Explanation:
this is because you never combined it with any other element in the periodic table and gold is not a compound or mixture.