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3 years ago

Why does a person have to eat three or more meals a day?

Physics

2 answers:

Art [367]3 years ago

8 0

Answer:

Three meals spread throughout the day provide your body with essential energy and nutrients and help keep you focused and less irritable. Spreading meals through the day also helps with the efficient digestion and absorption of foods and maintains stable blood sugar levels.

slamgirl [31]3 years ago

3 0

Answer:

in order to be healthy and to keep the body nutritionally fit

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Help me plssssssss cause I’m struggling

krok68 [10]

Answer:

I am pretty sure it is C

Explanation:

It can be found all over the universe

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3 years ago

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What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is 5.66 0.09 m?

iren2701 [21]

Answer:

4.77 %

Explanation:

We know that the volume V for a sphere of radius r is

$V(r) = \frac{4}{3} \ \pi \ r^3$

If we got an uncertainty $\Delta r$ the formula for the uncertainty of V is:

$\Delta V(r) = \sqrt{ (\frac{dV}{dr} \Delta r)^2 }$

We can calculate this uncertainty, first we obtain the derivative:

$\frac{dV}{dr} = 3 * \frac{4}{3} \ \pi \ r^2$

$\frac{dV}{dr} = 4 \ \pi \ r^2$

And using it in the formula:

$\Delta V(r) = \sqrt{ (4 \ \pi \ r^2\Delta r)^2 }$

$\Delta V(r) = \sqrt{ 4^2 \ \pi^2 \ r^4 \Delta r^2 }$

$\Delta V(r) = 4 \ \pi \ r^2 \Delta r$

The relative uncertainty is:

$\frac{\Delta V(r)}{V(r)}$

$\frac{ 4 \ \pi \ r^2 \Delta r }{ \frac{4}{3} \ \pi \ r^3}$

$\frac{ 3 \Delta r }{ r}$

Using the values for the problem:

$\frac{ 3 * 0.09 m }{ 5.66 m} = 0.0477$

This is, a percent uncertainty of 4.77 %

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3 years ago

What happens when magma rises towards the surface?

zzz [600]

It slowly cools an hardens,eventually turning into igneous rock<span />

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3 years ago

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12. Which of the following is the property of a system?

Sati [7]

Answer:

Explanation:

Pressure, temperature are measurable properties and they are also known as physical properties.

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3 years ago

What color do glacier appear if they are moving towards us?

kirill [66]

Answer:

Subcategories: Ice field

Explanation:

Glacier ice is blue because the red (long wavelengths) part of white light is absorbed by ice and the blue (short wavelengths) light is transmitted and scattered. The longer the path light travels in ice, the more blue it appears.

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3 years ago