Give examples demonstrating the role of "nature" and "nurture" in galaxy evolution
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Galaxies come in a wide variety of shapes and sizes. Protogalactic clouds that had low angular momentum may have formed halo stellar systems (elliptical galaxies), while clouds with higher angular momentum would have collapsed to a more disklike form (spiral galaxies). Such differences in the initial conditions is an example of the role of nature in galaxy evolution. An example of nurture is a collision between two spiral galaxies that randomizes the ordered stellar orbits, compresses the gas and causes it to rapidly form stars, eventually producing a gas-free, elliptical galaxy.
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State the Equivalence of Physical Laws postulate of special relativity
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Determine the number of boundary and initial conditions needed to solve the differential equation.
Unpolarized light of intensity I passes through four Polaroid sheets whose polarizing angles are rotated 30° from each other so that the last sheet is aligned at 90° to the first. What is the intensity of the light emerging from the fourth sheet?
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You are a passenger in a moving car, and you drop a coin from your right hand, holding your left hand directly below the point of release. If the car is moving at unchanging velocity, the coin will come down
A) in front of your left hand. B) in your left hand. C) to the side of your left hand. D) behind your left hand.