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pychu [463]
2 years ago
10

Alkaid and Merak are 25.6 ∘ apart in the earth's sky. Find the distance in light-years from Alkaid to Merak. Express your answer

in light-years.
Physics
1 answer:
Gemiola [76]2 years ago
4 0

Answer:

Distance =

a

2

+b

2

−2abcosθ

=

101

2

+77

2

−2×101×77×cos(25.6

0

)

which gives,

10201+5929−15554×0.8928

=45.85 which is nearly 46 ly.

Explanation:

:)

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In which of the following situation is work being done?
Afina-wow [57]

A wagon is pulled at an angle of 30 degrees to the horizontal.

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3 years ago
WILL MARK BRAINLIEST
Komok [63]

Answer:

yes every action as an equal and and opposite reaction. if you throw a tool then it will give you a reaction and you will move back.

Explanation:

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To understand it better:  

Each time a body or object exerts a force on a second body or object, it (the second body) will exert a force of equal magnitude but in the opposite direction on the first.  

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6 0
2 years ago
Two children, Ferdinand and Isabella, are playing with a water hose on a sunny summer day. Isabella is holding the hose in her h
mojhsa [17]

Answer:

Isabella will not be able to spray Ferdinand.

Explanation:

We'll begin by calculating the time taken for the water to get to the ground from the hose held at 1 m above the ground. This can be obtained as follow:

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Time (t) =.?

h = ½gt²

1 = ½ × 9.8 × t²

1 = 4.9 × t²

Divide both side by 4.9

t² = 1/4.9

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t = √(1/4.9)

t = 0.45 s

Next, we shall determine the horizontal distance travelled by the water. This can be obtained as follow:

Horizontal velocity (u) = 3.5 m/s

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Horizontal distance (s) =?

s = ut

s = 3.5 × 0.45

s = 1.58 m

Finally, we shall compare the distance travelled by the water and the position to which Ferdinand is located to see if they are the same or not. This is illustrated below:

Ferdinand's position = 10 m

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8 0
3 years ago
How should you behave while performing laboratory experiments?​
Brrunno [24]

Explanation:

Always behave responsibly in the laboratory. Do not run around or play practical jokes. Always check the safety data of any chemicals you are going to use. Never smell, taste or touch chemicals unless instructed to do so.

4 0
3 years ago
Read 2 more answers
A beaker of vegetable oil contains a beam of light that is aimed at a surface at an angle of 34 degrees as shown. If the index o
OverLord2011 [107]

Answer:

Angle of reflection of light is 34 degree

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8 0
3 years ago
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