Answer:
K = 9.53 MeV
Explanation:
The kinetic energy that the alpha particle has emitted, is the energy in excess after removing the resting energy of the atoms and the helium nucleus that forms the alpha particle
Since energy and masses are related and cannot be
m₀ c² =
c² + m_He c²+ K
K = c² (m₀ - m_{f} - m_He)
the mass of the Helium atom is 4 u
K = (3 10⁸)² (211,988868 -207.976652 - 4,002) 1,661 10⁻²⁷
K = 14,949 10⁻¹¹ (0.0102)
K = 1,527 10⁻¹² J
let's reduce 1 J = 6,242 10¹² MeV
K = 9.53 MeV
Answer: Visible light makes up 35% of natural light.
I think it’s maybe 2. But I’m not sure
Answer:
14. D
15. It is showing a magnet pushing against itself and everything around with tremendous force.
16. D, because of how many forcefields in that area.
17. It is showing (both) that they are attracting and repealing.
18. I’m not sure sorry :(
Explanation:
hope this helped!