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Gemiola [76]
4 years ago
9

What criteria do astronomers use to classify an object as a planet

Physics
1 answer:
AVprozaik [17]4 years ago
7 0
Orbits a Star.... gravity makes it spherical.
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Find out how the position of the Sun would be different at 12:00 midday in December than in June. What path would the sun take f
Ratling [72]

Answer:

Explanation: The Sun is directly overhead at solar noon at the Equator on the equinoxes, at the Tropic of Cancer (latitude 23°26′11.2″ N) on the June solstice and at the Tropic of Capricorn (23°26′11.2″ S) on the December solstice.

6 0
3 years ago
An object is placed a distance of twice the focal length away from a diverging lens. What is the magnification of the image?
Lesechka [4]

Answer:

+1/3

Explanation:

The lens equation states that:

\frac{1}{f}=\frac{1}{p}+\frac{1}{q}

where

f is the focal length

p is the distance of the object from the lens

q is the distance of the image from the lens

For a diverging lens, the focal length is negative: f=-f

and we also know that the object is placed a distance of twice the focal length, so p=2f

So we can find q from the equation above

\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{-f}-\frac{1}{2f}=-\frac{3}{2f}\\q=-\frac{2}{3}f

And the magnification of the image is given by

M=-\frac{q}{p}=-\frac{-\frac{2}{3}f}{2f}=\frac{1}{3}

5 0
4 years ago
Read 2 more answers
draw a labelled ray diagram to locate the image of an object formed by a convex lens of focal length 20cm when the object is pla
azamat
<h3><u>Answer</u> :</h3>

<u>Focal length of convex lens is taken positive.</u>

:\implies\sf\:\dfrac{1}{v}-\dfrac{1}{u}=\dfrac{1}{f}

:\implies\sf\:\dfrac{1}{v}-\dfrac{1}{(-30)}=\dfrac{1}{20}

:\implies\sf\:\dfrac{1}{v}=\dfrac{1}{20}-\dfrac{1}{30}

:\implies\sf\:\dfrac{1}{v}=\dfrac{3-2}{60}

:\implies\:\boxed{\bf{\gray{v=60\:cm}}}

7 0
3 years ago
The velocity of a 150 kg cart changes from 6.0 m/s to 14.0 m/s. What is the magnitude of the impulse that acted on it?
tensa zangetsu [6.8K]
M = 150 kg.

Final velocity, v = 14 m/s

Initial Velocity, u = 6 m/s

Impulse = <span> m(v - u)</span>
 
             = 150*(14 - 6)
           
             =  150*8 = 1200 kgm/s  or 1200 Ns<span> </span>
3 0
3 years ago
If the net force acting on an object is not zero, then the object is definitely
balu736 [363]

Answer:

C

Explanation:

Since the net force is changing, and not the speed, it is C

Hope this helped!

8 0
3 years ago
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