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svlad2 [7]
3 years ago
6

Which of the following stars is the coolest?

Physics
2 answers:
Natasha2012 [34]3 years ago
8 0
A star is a sphere composed of hydrogen and plasma. Red dwarfs are the coolest stars , also called M type of  stars. (The solution is Antares, a type M star). These cool stars are small stars in therms of their mass and have not enough mass to produce energy. That is the reason why they are the coolest.
GuDViN [60]3 years ago
6 0

Answer:

Antares, a type M star    

Explanation:

Stars are classified based in temperature using alphabets:

O, B, A, F, G, K, and M

Where, O represents a star having very high temperature. It would also be blue in color. (temperature about 41,000 K)

M represents a cool star having low temperature and red in color. (temperature about 3850 K)

Thus, Antares which is classified as a type M star would be the coolest.

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The traffic engineer for a large city is conducting a study on traffic flow at a certain intersection near the city administrati
densk [106]

Answer:

Minutes can provide us the continuous data as we can have the values between the two minutes, in fraction. So if we consider minutes there will be a complete continuous data for the analysis. However the number of cars, trucks, pedestrians, bicyclists, food trucks etc will be in integers as they can not be described in terms of fractions. So for continuous data option (E) is correct.

The number of minutes for a car to get from the intersection to the administration building.

6 0
3 years ago
A helicopter is ascending vertically with a speed of 5.10m/s. At a height of 105 m above the Earth, a package is dropped from a
Oksi-84 [34.3K]

Answer:

The time taken for the package to reach the ground is 20.6s

Explanation:

Given that the formula of distance is D = S×T where S represents soeed and T is time. So you have to substitute the following values into the formula :

distance = speed \times time

let \: distance = 105 \\ let \: speed = 5.10

105 = 5.1 \times t

5.1t = 105

t = 105 \div 5.1

t = 20.6 \: second \: (3s.f)

7 0
3 years ago
Need a little help here, ASAP please. The subject is simple science, not physics.
JulsSmile [24]
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5 0
3 years ago
ojectile is launched on the Earth with a certain ini- tial velocity and moves without air resistance. Another projectile is laun
mafiozo [28]
--vertical from ground to top--
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v = u + at
with v= 0, a=g, t = u/(-g)
g on the moon is 1/6
u is equal, then it takes 6 times longer on the moon.

--horizontal--
s = vt , v is equal
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3 years ago
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358 rocks, critical thinking

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