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3 years ago

12

What is the best unit to measure to use to find length of a strand of spaghetti

1 answer:

Tpy6a [65]3 years ago

8 0

If I’m not it’s a ruler

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Please help !!!!!!!20 minutes

Gala2k [10]

That would be erosion. I know this because i spent years studying rocks and had straight passed all of it. Hope this helps. ;)

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3 years ago

Read 2 more answers

A lipid that the body requires to make several critical substances but can’t synthesize on its own is _____.

Reptile [31]

The term that is being referred to in the given item above is essential lipid which other may more fondly refer to as essential fatty acids. These essential substances are mostly needed for the maintenance and integrity of the cellular membranes to be able to do their functions.

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3 years ago

An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum num

Lady bird [3.3K]

Answer:

Thus, the minimum number of photons per second is 77.34

Explanation:

Light intensity, $I_{min}$ = $5\times 10^{-13} W/m^{2}$

Pupil has a diameter, d = 8.5 mm

= 8.5 x $10^{-3}$ m

Radius of the eye, r = 4.25 x $10^{-3}$ m

∴ Area of the eye, A = $\pi .r^{2}$

= $3.14\times \left ( 4.25\times 10^{-3} \right )^{2}$

= $5.6\times 10^{-5} m^{2}$

Let $P_{min}$ be the minimum number of photons.

Therefore, $P_{min}$ = $I_{min}$ x A

= $5\times 10^{-13}$ x $5.6\times 10^{-5}$

= $2.8\times 10^{-17}$ W

Thus the minimum number of photons is given by

$N_{min}=P_{min}/E$

where E = $hc/\lambda$

= $\left (6.63\times 10^{-34}\times 3\times 10^{8} \right )/548\times 10^{-9}$

= $3.62\times 10^{-19} J$

Therefore, $N_{min}$ = $\frac{2.8\times 10^{-17}}{3.62\times 10^{-19}}$

= 77.34 photons per second

Thus, the minimum number of photons per second is 77.34

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3 years ago

Select the reasons why the term 'prokaryote' can be problematic.

miv72 [106K]

Answer:

__ It implies that prokaryotes existed before eukaryotes, and

__ It implies that eukaryotes evolved from prokaryotes.

Explanation:

The prefix pro- can mean "before". By using the term prokaryote one can tend to think that procaryotes preceded eukaryotes.

Preceed as existed before them, or as an evolutionary point of view.

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3 years ago

Conscious visual knowledge of objects (e.g., shape, size, texture) is stored in the:

son4ous [18]

Temporal cortex . .................

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3 years ago