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3 years ago

Why is Portland,Oregon a good city for biking

Physics

2 answers:

Ulleksa [173]3 years ago

5 0

Not many people in cars lots of biking trails

Alexxx [7]3 years ago

3 0

Portland, Oregon is a good city for biking because of all the biking lanes, also there is not that many cars driving, people are mostly walking.<span />

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Which region of the early universe was most likely to become a galaxy?

kramer

Answer:

This is likely possible for a region whose matter density is higher than the normal average.

Explanation:

A galaxy is a collection of lumps in space which are clumped together and interact with each other. There are a lot of speculations on how galaxies were birthed. some believe its formed by a collection of massive gas, dust which eventually collapsed under their own gravitational pull. others says its formed by the combination of large lumps of matter which accumulated forming thee galaxies. The possibility of a galaxy forming is dependent on how massive the matter in the region of the universe is.

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3 years ago

A quantum well is a region of semiconductor or metal film that confines particles to a small region, resulting in quantized ener

murzikaleks [220]

Answer:

226.2 m/sec

Explanation:

We have given $\Delta x=510nm=510\times 106{-9}m$

The plank's constant $h=6.67\times 10^{-34}$

Mass of electron $m=9.11\times 10^{-31}kg$

Now according to Heisenberg uncertainty principle $\Delta v\geq \frac{h}{2\pi m\Delta x}$

So $\Delta v\geq \frac{6.6\times 10^{-34}}{2\times 3.14\times 9.11\times 10^{-31}\times 510\times 10^{-9}}=226.2m/sec$

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3 years ago

Near which location in New York State would a geologist have the greatest chance of finding dinosaur footprints in the surface b

Likurg_2 [28]

Answer:

Explanation:

41° 10' N latitude, 74° W longitude

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3 years ago

Why a paperclip does NOT float?

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Because of Surface tension

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2 years ago

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Why is physical science important

Murrr4er [49]

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