How much energy does a 100-W light bulb use in 8.0 hours?
A) 13 kWh B) 0.80 kWh C) 0.0080 kWh D) 800 kWh
B
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Using Jupiter's axial tilt, explain why its rings are harder to observe from Earth than even the dark rings of Uranus
What will be an ideal response?
The Sun appears to be red as it sets because:
1.Air absorbs red light less than other frequencies (i.e., acts like a red filter). 2.The sunlight has a red-shift when you're moving fastest away from it. 3.The Sun cools down to 5000 K each evening. 4.Light is refracted as it enters the atmosphere. 5.The Sun dies in a glorious fireball each evening and is reborn each morning. 6.None of the above.
The only INVALID electron state and shell designation among the following is
A) 1s, K. B) 2s, L. C) 2d, L. D) 3s, M. E) 3d, M.
Which of the following observations is not a piece of evidence supporting the Big Bang theory?
A) darkness of the night sky B) recession speeds of far away galaxies relative to close ones C) observed helium abundance in the universe D) relative motions of galaxies in the Local Group