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3 years ago

A pie chart is commonly used to present:

Physics

2 answers:

lora16 [44]3 years ago

5 0

I would've thought all of the above. But if its one answer then go with budgets.

ElenaW [278]3 years ago

3 0

If that's a true or false, true.

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While traveling on a dirt road, the bottom of a car hits a sharp rock anda small hole develops at the bottom of its gas tank. If

tester [92]

Answer:

6.86 m/s

Explanation:

velocity of the gasoline through the hole would be

$v = \sqrt {2gh}\\v = \sqrt {2\times 9.8\times 0.35} =6.86 m/s$

As the height would decrease, the velocity of the flow would decrease.

If the lid of the tank would be closed, the pressure would reduce. so, again the velocity of the flow would reduce.

5 0

3 years ago

Light traveling from water to a gemstone strikes the surface at an angle of 80.0º and has an angle of refraction of 15.2º . (a)

7nadin3 [17]

Answer:

The the speed of light in the gemstone is $v= 0.599*10^8 m/s$

The unreasonable thing about this is that the speed of ligth in the gemstone is too low

the speed is 19% of the speed of light which is very low

One main unreasonable or inconsistent factor is that the assumption that the differnce between the angle of incidence and angle of refraction is very large

Explanation:

From the question we are told that

The angle of incidence $i = 80^o$

The angle of refraction $r = 15.2^o$

From Snell's law we have ,

$n_1 sin \theta_1 = n_2 sin \theta_2$

Where $n_1$ is the refractive index of the first medium (water) with a constant value of $n_1 = 1..333$

$n_2$ is the refractive index of the second medium (gem stone)

$\theta_1$ is the angle between the beam and perpendicular surface of the first medium

$\theta_2$ is the angle between the beam an the perpendicular surface of the second medium

Making the $n_2$ the subject of the formula

$n_2 = n_1 \frac{sin \theta_1}{sin \theta_2}$

$= (1.333)(\frac{sin (80.0)}{sin 15.2} )$

$= 5.007$

Generally refractive index of a material is mathematically represented

$n = \frac{c}{v}$

Where c is the speed light

v is the speed of light observed in a medium

Making v the subject

$v = \frac{c}{n}$

substituting value for gem stone

$v = \frac{3.0*10^8}{5.007}$

$v= 0.599*10^8 m/s$

7 0

4 years ago

Please help!!! give me a summary on why human population is either good or bad!! thank youu

bagirrra123 [75]

It is bad because humans are destroying the planet with pollution and cutting down natural habitats. This is not only killing the human population in the future, but as of right now they are killing animals, and trees. The human population is slowly destroying the planet.

7 0

3 years ago

Which of the fundamental forces explains the structure of atoms and molecules?

spayn [35]

The electromagnetic force<span> holds atoms and molecules together.
like a magnet's pull on steel.</span>

7 0

4 years ago

Read 2 more answers

The speed an

Likurg_2 [28]

When you know both the speed and direction of an object’s motion, you know the velocity of an object. speed in a given direction is called velocity
hope this helps :)

8 0

3 years ago