Answer:
Part a)
![v_2 = -0.300](https://tex.z-dn.net/?f=v_2%20%3D%20-0.300)
Part b)
Here final kinetic energy is more than the initial kinetic energy
This increase in kinetic energy is due to spring connected between them as the spring energy is converted into kinetic energy of two blocks
Explanation:
Part a)
As we know that there is no external force on the system of two gliders
So here we can use momentum conservation for two gliders
So we will have
![m_1 v_1 + m_2 v_2 = (m_1 + m_2)v_i](https://tex.z-dn.net/?f=m_1%20v_1%20%2B%20m_2%20v_2%20%3D%20%28m_1%20%2B%20m_2%29v_i)
![m_1 = m_2](https://tex.z-dn.net/?f=m_1%20%3D%20m_2)
![1.300 + v_2 = 2(0.500)](https://tex.z-dn.net/?f=1.300%20%2B%20v_2%20%3D%202%280.500%29)
![v_2 = -0.300](https://tex.z-dn.net/?f=v_2%20%3D%20-0.300)
Part b)
now we will have
initial kinetic energy of both gliders is given as
![K_i = \frac{1}{2}(m + m)(0.500)^2](https://tex.z-dn.net/?f=K_i%20%3D%20%5Cfrac%7B1%7D%7B2%7D%28m%20%2B%20m%29%280.500%29%5E2)
![K_i = 0.25m](https://tex.z-dn.net/?f=K_i%20%3D%200.25m)
Final kinetic energy of two gliders
![K_f = \frac{1}{2}m(0.300)^2 + \frac{1}{2}m(1.300)^2](https://tex.z-dn.net/?f=K_f%20%3D%20%5Cfrac%7B1%7D%7B2%7Dm%280.300%29%5E2%20%2B%20%5Cfrac%7B1%7D%7B2%7Dm%281.300%29%5E2)
![K_f = 0.89 m](https://tex.z-dn.net/?f=K_f%20%3D%200.89%20m)
so here final kinetic energy is more than the initial kinetic energy
This increase in kinetic energy is due to spring connected between them as the spring energy is converted into kinetic energy of two blocks
Answer:
Factors determining the state of substances
* Inter molecular force : substances having strong intermolecular force will be solid and substance with weak inter molecular force will be gas.
* Nature of chemical bond:
Ionic compounds are generally solid in nature because of strong intermolecular force.
Polar covalent compounds may be solid or liquid
Non polar covalent compounds generally gas
* Electro negativity difference: greater the electronegativity difference, greater will be the intermolecular force.
A concave lens can only form a virtual image. The correct option among all the options that are given in the question is the third option or option "C". Concave lenses are mostly thinner in the middle compared to its edges. I hope that this answer has come to your help.
The answer is 6 and a half days