What cause the death of stars？
2 answers:
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The magnitude of the force of gravity acting between the particles is:
The weight of each particle is:
Now let's plug in the numbers knowing that
, 
, 
and m1 and m2 are already given in kilograms. We get then:
N
N
N
This results shows us why we don't often see objects being attracted to each other, their mass is too small compared to the earth gravitational pull.
The weight of each particle is:
Now let's plug in the numbers knowing that
This results shows us why we don't often see objects being attracted to each other, their mass is too small compared to the earth gravitational pull.
<h2>Answer: 9600 J</h2>
The kinetic energy of a body is that energy it possesses due to its movement and is defined as:
Where is the mass of the body and
its velocity
.
This has to do with the speed of an object and how much mass it has; basically how the object is moving.
Now, according to this equation and knowing that the mass of the buffalo is and its velocity
:
Therefore the correct option is B.
Answer:
They both have the same angular speed.
Explanation:
The mathematical formula for angular speed is:
where is angular speed,
is a constant, and
is the period (the time it takes the marry-go-round to complete a lap).
What we can see from the formula is that, since the does not change its value, the angular speed depends only on the period T.
In this case for both the children closer to the outher edge and for the children closer to the center, the time to complete a lap is the same, because the time does not depend on where they are sitting in the marry go round. This means that the period for both is the same.
Thus, since the period for both is the same, the angular speed given by
will also be the same