3. Hahn determined that barium (atomic number 56) was one of the elements created when a uranium atom (atomic number 92) split .
1 answer:
According to a periodic table, Krypton was created during the fission of Uranium.
<h3>What is the atomic number?</h3>
<em>Atomic</em> number is a characteristic associated with an element and indicates its number of protons, when a fision occurs, the total number protons is conserved.
Thus, the fission of uranium is led by two elements with <em>atomic</em> numbers 56 and 36. According to a periodic table, those <em>atomic</em> numbers are associated to elements Barium (Ba) and Krypton (Kr), respectively.
According to a periodic table, Krypton was created during the fission of Uranium.
To learn more on fission, we kindly invite to check this verified question: brainly.com/question/6572079
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The velocity of the combined mass after the collision is 0.84 ms-1.
<u>Explanation:</u>
According to law of conservation of momentum, the change in momentum before collision will be equal to the change in momentum of the objects after collision in isolated system.
But as it is perfectly inelastic collision in the present case, the final momentum will be based on the product of total mass of both the object with the velocity with which the collision occurred. This form is attained from the law of conservation of momentum as shown below:
So as law of conservation of momentum,
Here = 3 kg and
= 2 kg are the masses of objects 1 and 2,
= 1.4 m/s and
= 0 are the initial velocities of object 1 and object 2,
and
are the final velocities of the objects.
So after collision, object 1 get sticked to object 2 and move together with equal velocity =
=
. Thus the above equation will become,
So the final velocity is
Thus,
= 0.84 ms-1.