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3 years ago

An ellipse has two focal points. One of the focal points is the _____. earth, moon, or Sun

Physics

2 answers:

Rasek [7]3 years ago

6 0

An ellipse has two focal points. One of the focal points is the Sun.

Because they planets move faster when they are around the sun.

pogonyaev3 years ago

3 0

An ellipse has two focal points. One of the focal points is the sun. The sun is considered as one of the focal points because the planets orbit around the sun in an elliptical path.

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Plz answer fast the question

alexgriva [62]

Answer:

Angle of incidence = 20°

Angle of reflection = 20°

Explanation:

Applying,

The first Law of Refraction: The incident ray, the reflected ray and the normal at the point of incidence all lies in the plane.

From the diagram,

Angle of incidence = 90-70

Angle of incidence = 20°

From the law of reflection,

Angle of incidence = Angle of reflection

Therefore,

Angle of reflection = 20°

3 0

3 years ago

Which of the following paraphrases Hubble Law?Select one:A. The greater the distance to a galaxy, the greater its redshift. B. T

olya-2409 [2.1K]

The correct answer is:

~A. The greater the distance to a galaxy, the greater its redshift.

Hope this helps!!!

4 0

3 years ago

A flat disk of radius 0.50 m is oriented so that the plane of the disk makes an angle of 30 degrees with a uniform electric fiel

nexus9112 [7]

Answer:

The electric flux is $280\ \rm N.m^2/C$

Explanation:

Given:

Radius of the disc R=0.50 m
Angle made by disk with the horizontal $\theta=30^\circ$
Magnitude of the electric Field $E=713.0\ \rm N/C$

The flux of the Electric Field E due to the are dA in space can be found out by using Gauss Law which is as follows

$\phi=\int E.dA$

where

$\phi$ is the total Electric Flux
E is the Electric Field
dA is the Area through which the electric flux is to be calculated.

Now according to question we have

$=EA\cos\theta \\=713\times 3.14\times 0.5^2 \times \cos60^\circ\\=280\ \rm N.m^2/C$

Hence the electric flux is calculated.

8 0

3 years ago

Which of the following is true about elements? A. Atoms of all elements contain the same number of protons, but the number of ne

DedPeter [7]

D. Atoms of all elements contain protons, but the number of protons is different for every element.

6 0

3 years ago

How does urban development affect earths environment

erastovalidia [21]

the polluted urban environment affects the health and quality of life

7 0

4 years ago