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Westkost [7]
3 years ago
7

What causes the apparent motions of stars across the sky each night

Physics
1 answer:
densk [106]3 years ago
3 0

Answer:

B

Explanation:

for the motion every night, it is because the Earth spins on its axis.

for the changes over a year, this is because the Earth rotates around the sun.

for the changes over hundreds, thousands or millions of years, this is because the whole solar system (including the Earth, of course) rotates with all the other stars in our galaxy around the center of the galaxy. and each star system has its own orbit (similar to the planets in our solar system).

it is very rare to see objects outside of our galaxy without a telescope, but they change too over a long period of time, because our galaxy not only rotates by also moves through the universe, and these other objects move on their own too.

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If it is in its ground state, it will be in the level 1s

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A ball travels with velocity given by Error converting from MathML to accessible text., with wind blowing in the direction given
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Power is the time rate of change of work. <br> a. True<br> b. False
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A book is moved once around the perimeter of a tabletop with dimensions 1.2 m x 1.8 m.
Goryan [66]

Answer:

a) 0m

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Distance traveled: Total distance traveled.

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And we know that:

displacement = final position - initial position = 0

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b)

We can assume that the book traveled along the perimeter of the table.

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Then the perimeter of the table is:

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This means that the distance traveled by the book is 6 meters.

3 0
2 years ago
To lift an object, you must pull upward on the object with a force __________ to the object’s weight.
Rudiy27

Answer:

To lift an object, you must pull upward on the object with a force greater than the object’s weight.

7 0
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