What happens when matter and antimatter collide
1 answer:
Answer:
Annihilation
Explanation:
Annihilation is the phenomenon that occurs when a particle of matter and its corresponding anti-particle of antimatter collide with each other. When this collision occurs, the particle and antiparticle "disappear", and all their mass is converted into pure energy, according to Einstein's famous equation:
where
E is the energy released
m is the mass of the two particles together
c is the speed of light
Annihilation is the process that releases the largest amount of energy at all, since the whole mass of the particles involved is 100% converted into energy. An example of annihilation is the electron-positron annihilation.
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Answer:
Average velocity is 0.296 m/s.
Average speed is 4.0 m/s.
Explanation:
Given:
Distance of the circular track is,
Number of laps ran is,
Time taken for the run is,
Now, total distance covered in 5.4 laps =
Also, since the path is a circle, the final position of the athlete after 5.4 laps will be 0.4 of 400 m ahead of the starting point.
Distance covered in 0.4 laps is,
Therefore, the displacement of the athlete will be 160 m as the athlete is 160 m ahead of the starting point and displacement depends on the initial and final points only.
Now, average velocity is given as:
Average speed is the ratio of total distance covered to total time taken.
So, average speed =