Three hundred kg of water are heated from 20ºC to 80ºC and at constant pressure. Determine the enthalpy change and the heat.
What will be an ideal response?
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How does the Solar Nebula theory explain the formation and orbital properties of planets?
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Determine the number of air masses through which the sun’s rays must pass to reach the earth at the equator and at the equinox.
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A tectonic ridge appears to connect points 3a and 3b, crossing several craters. From its appearance, we can conclude that it must have formed
A) before the area was cratered. B) after the area was cratered. C) at the same time the area was cratered.
A light beam having a wavelength of 470. nm in air is directed into glycerine (n = 1.47)
(a) What is the frequency of the light in the glycerine? (b) What is its wavelength in the glycerine? (c) If the incident angle is 75.0°, what is the refracted angle?