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Lynna [10]
3 years ago
13

What kind of gas cloud is most likely to give birth to stars? what kind of gas cloud is most likely to give birth to stars? a co

ld, dense gas cloud a hot, dense gas cloud a hot, low-density gas cloud a cold, low-density gas cloud?
Physics
1 answer:
navik [9.2K]3 years ago
7 0
Hello! 

The kind of gas cloud that is most likely to give birth to stars is a cold, dense gas cloud.

Stars are formed in giant molecular clouds, called "star nurseries". These are regions with molecular Hydrogen, Helium, and little amounts of other elements. These are cold and dense regions, and the gas cloud collapses, forming a protostar. The protostar gradually heats, powering nuclear reactions in its center, which increases the temperature even more and giving birth to a star. 

Have a nice day!
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A person stands on level ground with both feet equidistant from each other directly under their shoulders. In this case, the nor
d1i1m1o1n [39]

Answer:

The correct option is C: the normal force of gravity on each foot is equal to 1/2 the force of gravity on the person.

Explanation:

Since the feet are equidistant from each other, the total torque is zero:

\Sigma \tau = 0      

And the total forces acting on the feet are also equal to zero:

\Sigma F = 0

Hence, the normal force on the feet are:

W = N_{1} + N_{2}          

Where:                  

W: is the weight force

N₁: is the normal force of foot 1

N₂: is the normal force of foot 2

Since the normal force of each foot is the same, we have that N₁ = N₂ so:

W = 2N        

N = \frac{W}{2}   (1)

From the result of equation (1), we have that the normal force on each foot is equal to 1/2 the force of gravity on the person.

   

Therefore, the correct option is C: the normal force on each foot is equal to 1/2 the force of gravity on the person.                                                                        

I hope it helps you!

4 0
3 years ago
If you increase the force on an object, its acceleration
Snezhnost [94]

Answer:

True!

Explanation:

if you increase the force on an object, its acceleration

pls mark me brainliest

5 0
4 years ago
Suppose a lion running at a velocity of 10 m/s east slows
iris [78.8K]

Answer:

a=0.34\ m/s^2

Explanation:

Given that,

Initial velocity, u = 10 m/s

Final velocity, v = 0 (stops)

Time, t = 30 s

We need to find the acceleration of the lion.

We know that,

Acceleration = rate of change of velocity

a=\dfrac{v-u}{t}\\\\a=\dfrac{10-0}{30}\\\\a=0.34\ m/s^2

So, the acceleration of the lion is 0.34\ m/s^2.

5 0
3 years ago
Your friend says that the primary difference between a solid and a liquid is the kind of atoms in the material. Do you agree or
Alex Ar [27]

Answer:

Answered

Explanation:

I disagree with my friend because, the primary difference is not in the kind of atoms, rather it is the arrangement of atoms and molecules that distinguishes solids and liquids.

Atoms are closely packed in solid and hence large cohesive forces act between atoms in solids whereas in liquids atoms are at a distance from each other, hence, less cohesive force act between it's atoms. Moreover, due to loose packing in liquids atoms are free to move in space and hence liquids can flow whereas solids cannot.

8 0
4 years ago
4.
tatiyna
The answer is A. A folkway is a closely held belief by a specific group of people.
6 0
3 years ago
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