Answer with Explanation:
We are given that
Mass of one body=4.5 kg
Initial velocity of one body=8.9 m/s
Initial velocity of another body=0
Final velocity of one body=
a.We have to find the mass of the other body.
Energy and momentum are conserved in this system
(equation I)
From conservation of kinetic energy
(equation II)
Substitute equation I in equation II
Substitute the given values then we get
Hence, the mass of other body=3 kg
b.We have to find the speed of two body center of mass .
The center of mass speed is given by
Substitute the values then we get
Hence, the speed of the two body center of mass is given by =5.34 m/s
Answer:
the object is no longer in equilibrium .
Elements have 2 or 8 electrons on their outer shell
<h2>Hello!</h2>
Answer:
If we are talking about an electrically neutral atom, it has 23 electrons.
<h2>Why?</h2>
An electrically neutral atom has the same number of protons (positive charge) and electrons (negative charge).
When an atom has more protons than electrons, it's called positive ion (cation), it's an ion with a positive charge.
When an atom has more electrons than protons, it's called negative ion (anion), it's an ion with a negative charge.