Answer:
![0.103\times 10^5 m/s](https://tex.z-dn.net/?f=0.103%5Ctimes%2010%5E5%20m%2Fs)
Explanation:
We are given that
Mass of uranium,![M=238 units](https://tex.z-dn.net/?f=M%3D238%20units)
Initial velocity,u=0
Mass of helium nucleus,![m_1=4 units](https://tex.z-dn.net/?f=m_1%3D4%20units)
Mass of thorium,![m_2=234 units](https://tex.z-dn.net/?f=m_2%3D234%20units)
Speed of helium nucleus,![v_1=6\times 10^5 m/s](https://tex.z-dn.net/?f=v_1%3D6%5Ctimes%2010%5E5%20m%2Fs)
We have to find the speed of the thorium nucleus.
According to law of conservation of momentum
Initial momentum=Final momentum
![0=m_1v_1+m_2v_2](https://tex.z-dn.net/?f=0%3Dm_1v_1%2Bm_2v_2)
![m_2v_2=-m_1v_1](https://tex.z-dn.net/?f=m_2v_2%3D-m_1v_1)
![v_2=\frac{-m_1v_1}{m_2}](https://tex.z-dn.net/?f=v_2%3D%5Cfrac%7B-m_1v_1%7D%7Bm_2%7D)
![v_2=\frac{-4\times 6\times 10^5}{234}=0.103\times 10^5 m/s](https://tex.z-dn.net/?f=v_2%3D%5Cfrac%7B-4%5Ctimes%206%5Ctimes%2010%5E5%7D%7B234%7D%3D0.103%5Ctimes%2010%5E5%20m%2Fs)
Answer:
soccer ball
Explanation:
Because it's round in shape and therefore cannot be stopped as both moves at same speed. There's no edges or corners to bounce up and slow the ball.
Answer:
concave mirror
Explanation:
Why This is Correct Because, concave mirrors only form a virtual image when a object is larger than the other. when the object is produced between the focus, object and the image object, it becomes a virtual image.