Answer:
Momentum of alpha particle is 1.4752x10^-19 kg-m/s
Explanation:
Detailed explanation and calculation is shown in the image below
Answer:
A. Because protons are positively charged and like charges repel
Explanation:
In the nucleus of an atom are subatomic particles as follows: proton and neutron. Protons are positively charged subatomic particles while neutrons are neutrally charged. Following the principle that "like charges repel one another", protons in the nucleus of an atom tend to repel one another.
Hence, the need for neutrons to form a strong force with the self-repelling protons. This bonding between the neutrons and protons help keep the nucleus together. Therefore, protons wouldn’t be able to handle being packed into the nucleus without neutrons because protons are positively charged and like charges repel.
10¹¹ is the approximate number of atoms in a bacterium.
<h3>
What do you understand by mass of element?</h3>
The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu).
Given,
Mass of a bacterium atom = 10⁻¹⁵ kg.
Mass of a hydrogen atom = 10⁻²⁷ kg.
From the above observation ,
The average mass of an atom of the bacterium is ten times the mass of a hydrogen atom.
Atomic mass 1 bacterium atom = 10 x mass of hydrogen atom
= 10 x 10⁻²⁷ kg.
= 10⁻²⁶ kg.
Thus,
The number of atoms in a bacterium
=
=
=
The approximate number of atoms in a bacterium is .
Learn more about bacterium here:
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