If we were to re-run the formation of the solar system, what would likely be the same and what would likely be different?
What will be an ideal response?
As with our solar system, planets would likely orbit in a thin disk, with small, dense planets close to the Sun and larger, jovian-like planets further away because these properties are due to the cumulative effects of cloud flattening during collapse and enhanced heating close to the star. The properties of our solar system that would be less likely to be repeated would be those due to chance events (giant impacts), such as the backward rotation of Venus, the formation of Earth's moon, and the sideways tilt of Uranus.
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For the sulfuric acid in Practice Problem 5-5, estimate the velocity profile along the tank vertical wall in terms of the vertical height y and the distance from the wall, x.
What will be an ideal response?
Denver, Colorado and Madrid, Spain are at nearly the same latitude (about 40°N). If you travel from Denver to Madrid staying at the same latitude the entire trip, will you be taking the shortest route?
A) No. The shortest path on the Earth has to be a great circle. B) No. The shortest path on the Earth must always be a straight line. C) Yes. A flat map of Earth shows this path to be straight, and a path that is straight on a map is the shortest path. D) Yes. Staying at a constant latitude guarantees the shortest path.
Radioactive decay is
A) deterministic B) relativistic C) atomistic D) probabilistic
If two nonzero vectors point in the same direction, their dot product must be zero
A) True B) False