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3 years ago

Drawing a ray diagram for an object far from convex lens requires how many rays?

Physics

1 answer:

Crank3 years ago

5 0

Answer

Explanation:

four rays can also explain the ray diagram if the object is at infinity

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A natural force of attraction exerted by the earth upon objects, that pulls

Mashutka [201]

A natural force of attraction exerted by the earth upon objects, that pulls objects towards earth's center is called Gravitational force .

6 0

3 years ago

If stellar parallax can be measured to a precision of about 0.01 arcsec using telescopes on the Earth to observe stars, to what

marin [14]

Answer:

It corresponds to a distance of 100 parsecs away from Earth.

Explanation:

The angle due to the change in position of a nearby object against the background stars it is known as parallax.

It is defined in a analytic way as it follows:

$\tan{p} = \frac{1AU}{d}$

Where d is the distance to the star.

$p('') = \frac{1}{d}$ (1)

Equation (1) can be rewritten in terms of d:

$d(pc) = \frac{1}{p('')}$ (2)

Equation (2) represents the distance in a unit known as parsec (pc).

The parallax angle can be used to find out the distance by means of triangulation. Making a triangle between the nearby star, the Sun and the Earth (as is shown in the image below), knowing that the distance between the Earth and the Sun (150000000 Km), is defined as 1 astronomical unit (1AU).

For the case of ( $p('') = 0.01$ ):

$d(pc) = \frac{1}{0.01}$

$d(pc) = 100$

Hence, it corresponds to a distance of 100 parsecs away from Earth.

Summary:

Notice how a small parallax angle means that the object is farther away.

Key terms:

Parsec: Parallax of arc second

7 0

3 years ago

What role does Nitrogen play for all living organisms?

Y_Kistochka [10]

It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.

Hope this helps! ;)

5 0

3 years ago

Red light from three separate sources passes through a diffraction grating with 5.60×105 slits/m. The wavelengths of the three l

shtirl [24]

Answer:

I can help

Explanation:

6 0

3 years ago

two children sit on a merry go round. on sits 0.5 m from the center and the other sits 3 m from the center. Which child has grea

GuDViN [60]

i would say that the child with more linear speed is the cild that is 3 meters away from the center of the merry go round. because the child that is 0.5 meters from the center of the merry go round is less linear because the steering of the merry go round is started from the outer part of the merry go round so it would make more sense that the child that is 3 meters from the center of the merry go round would be more linear in speed.

hope this helps!

8 0

3 years ago